ratio Definition

  • 1the quantitative relation between two amounts showing the number of times one value contains or is contained within the other
  • 2a rate between two things

Using ratio: Examples

Take a moment to familiarize yourself with how "ratio" can be used in various situations through the following examples!

  • Example

    The ratio of boys to girls in the class is 2:3.

  • Example

    The ratio of sugar to flour in the recipe is 1:3.

  • Example

    The company has a debt-to-equity ratio of 2:1.

  • Example

    The teacher wants to maintain a good student-teacher ratio.

ratio Synonyms and Antonyms

Phrases with ratio

  • a mathematical ratio that is believed to be aesthetically pleasing and is found in many natural forms, such as the spiral of a seashell


    The architect used the golden ratio to design the building's proportions.

  • the proportional relationship between the width and height of an image or screen


    The movie was filmed in a widescreen aspect ratio.

  • price-to-earnings ratio

    a financial ratio that compares a company's stock price to its earnings per share


    Investors use the price-to-earnings ratio to evaluate a company's stock.

Origins of ratio

from Latin 'ratus', meaning 'reckoned'


Summary: ratio in Brief

The term 'ratio' [ˈreɪʃiəʊ] refers to the quantitative relationship between two amounts, often expressed as a proportion or rate. It can describe the comparison of various quantities, such as the ratio of boys to girls in a class or the debt-to-equity ratio of a company. The concept extends into phrases like 'golden ratio,' which describes a mathematically pleasing proportion found in nature, and 'price-to-earnings ratio,' which is a financial metric used to evaluate stocks.

How do native speakers use this expression?