Proportion – Natural sciences – Mathematic

We explain what a proportion is and some examples of this equality relationship. In addition, types of proportionality exist.

What is a proportion?

In mathematics, the equality relationship between two ratios, that is, between two comparisons between two determined quantities, is known as a proportion. If a/b is a ratio, then the equality a/b = c/d will be a proportion.

For example: if a business selling pizza has a profit of $15,000 and an expense of $5,000, we can say that the company has a ratio of 3. Similarly, if it costs this business $20 to make two pizzas (20/2 = 10), making four pizzas would cost $40 (40/4 = 10). If both ratios are expressed in a formula: 20/2 = 40/4. Here is a balance.

Theorizing about this type of relationship was developed in Greek antiquity and is attributed to Eudoxius of Cnidos, teacher of the famous Euclid of Alexandria, thanks to whom the teachings of his teacher survive, collected in book V of Euclid’s Elements.

Types of proportionality

We can say that a proportion occurs in mathematical situations where the values ​​of two magnitudes depend directly on each other (direct proportionality). Thus, when one of the values ​​of the relationship increases, the other will also necessarily do so, as is the relationship between temperature and energy; for example: the higher the temperature, the higher the power, and vice versa.

On the other hand, in a relationship where the increase of one of the terms leads to the decrease of the other, it is said that we face an inverse proportionality. This can be expressed as two terms being inversely proportional: when one goes up, the other goes down, and vice versa. Such is the relationship between speed and time: the faster the speed, the shorter the time it will take to reach our destination, and vice versa.

Related Posts

Previous post Solar system
Next post Density – Chemistry – Natural sciences
Finance management Business development Business strategy Business operations Business management Business growth Business analysis Industry trends Financial analysis Industry insights Industry challenges Manufacturing process Manufacturing industry Manufacturing technologies Parenting Family Journalism Lifestyle blog Current events Breaking news Media coverage Educational trends Scientific community STEM (Science, Technology, Engineering, and Mathematics) Legal support team Legal regulations compliance Intellectual property laws Career success Education software Online learning platforms Civil rights protection Corporate legal compliance Legal guidance blog Cybersecurity Social media marketing Digital transformation Network infrastructure Internet of Things (IoT) Web development Software maintenance Software engineering Mobile apps E-commerce platforms User experience (UX) design User interface (UI) design Responsive web design Artificial intelligence (AI) Car accessories Automotive engineering Car maintenance Adventure travel Car technology Vehicle Automotive trends Automotive industry analysis Car brands Healthy lifestyle Nutrition and wellness Dermatology services Cosmetic procedures Plastic surgery Alternative medicine Fitness exercises Mental health Yoga and meditation Oral health Fashion Women's fashion Skincare routine Wedding flowers Fashion accessories Online fashion community Online shopping Fashion tips Pet Health Services Veterinary Care Shelter and Rescue Home renovation ideas Interior design inspiration Home decor trends mart home technology Real estate market trends Rental property management Gardening and landscaping tips Home remodeling and renovations Moving and packing services Professional home cleaning furniture and accessories Art and design workshops Art and culture events Art festivals and fairs Visual arts and crafts Outdoor adventures Sports events sports Gaming community Outdoor family activities Gastronomy Food tourism Food exploration Vacation Holiday Tourist Attractions Travel destinations Leisure activities Weekend getaway Travel experiences News reporting Residential services Big Data Real estate agent selection Parenting Guides Pool maintenance and cleaning Fashion industry news health shop Data analytics Community Press release zoom news info Parenting Tips & Advice Legal representation Health and wellness tips data macau travel Medical treatmentsschool trips plus uk Legal assistanceParenting Tips puppy love pets uk Automotive manufacturing Exterior home improvement Travel tips Headlines Food culture Automotive industryAutomotive industry Healthcare servicesAutomotive industry tekno gue