Question

Maths ratio and proportion ​

Answer 1

Answer:

Ratios and Proportions - Proportions - In Depth. A proportion is simply a statement that two ratios are equal. It can be written in two ways: as two equal fractions a/b = c/d; or using a colon, a:b = c:d.

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Answer 2

Ratio and Proportion

A ratio is a relationship between two numbers that defines the quantity of the first in comparison to the second. For example, for most mammals, the ratio of legs to noses is 4:14:1, but for humans, the ratio of legs to noses is 2:12:1.

Ratios can be written in the fractional form, so comparing three boys with five girls could be written 3:53:5 or \frac{3}{5}53.

When quantities are proportional, their ratios are equal. For example, the ratios \frac{2}{5}52 and \frac{8}{20}208 are proportional. Note that \frac{4}{10}104 and \frac{12}{30}3012 are equivalent fractions because they both simplify to \frac{2}{5}.52.