Question

ratio and proportion maths explain

Answer 1

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

4:1

4:1

, but for humans, the ratio of legs to noses is

2:1

2:1

.

Ratios can be written in the fractional form, so comparing three boys with five girls could be written

3:5

3:5

or

3

5

35

.

When quantities are proportional, their ratios are equal. For example, the ratios

2

5

25

and

8

20

820

are proportional. Note that

4

10

410

and

12

30

1230

are equivalent fractions because they both simplify to

2

5

Answer 2

A ratio is the comparison of two or more quantities of the Same kind using division. The ratio of two quantities a and b of the same kind in the same units is written generally as a : b.

A proportion is an equation that states that two ratios are equal.