Question

Are 1,4,5 and 20 in proportion?​

Answer 1

The mean proportion of 5, 20 is 10.

Answer 2

Given :

⬤ 1 , 4 , 5 and 20 (Proportion)

To Find :

⬤ Numbers are in Proportion or Not .

Solution :

1 : 4 :: 5 : 20

Product of Extremes = Product of Means

1 × 20 = 4 × 5

$\sf{20 = 20}$

Answer is Equal (20 = 20) .

Hence , 1 , 4 , 5 and 20 are in Proportion .

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Extra Information :

Proportion :

Proportion is a Statement which shows that two ratios are equal . Such an equality of two ratios is called Proportion .

Like → 13 : 247 and 15 : 75

Extreme and Means of a Proportion :

Suppose , a , b , c and d are in Proportion .

The First and Fourth terms (a , d) are Called Extremes terms or Extremes . And the Second and Third terms (b , c) are called Middle Terms or Means .

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