a ratio is a comparison between 2 things and a proportion is a ratio on each side of the = sign
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an example of a ratio is the difference between two numbers or sets of numbers such as 600 and 200... the ratio is 400...
A proportion is a statement that says "These two ratios are equal".
Ratio
Direct proportionality. Their graph would be a straight line through the origin, with the slope equal to the ratio.
A ratio between two sets of measurements is called a proportion. A proportion is a statement that two ratios are equal. It is often used to compare quantities or values in different contexts, such as in mathematics, science, and finance. The relationship between the two sets of measurements can be expressed using fractions or decimals.