Question

213 : 7 :: ___ : 8
ans is 340 but how ?​

Answer 1

Answer:

214:6__ 8 ans is 340 but now

Answer 2

The missing number is 243.42

GIVEN:- 213: 7:: ___: 8

TO FIND:- missing number

SOLUTION:-

• We can define a ratio of two quantities a and b of the same kind in the same units as a fraction a/b.

• A proportion is an equation that states that two ratios are equal. Four numbers are said to be in proportion if the ratio of the first two is equal to the ratio of the last two i.e., a, b, c and d are said to be in proportion, if a/b = c / d This is expressed as a: b::c: d. It is read as "a is to b as c is to d.

According to the question,

Let the missing number be x

213: 7:: x: 8

$\frac{213}{7} = \frac{x}{8}$

By cross multiplication,

$8 \times 213 = x \times 7 \\ 1704 = 7x \\ 7x = 1704$

Dividing both sides by 7

$\frac{7x}{7} = \frac{1704}{7} \\ x = 243.42$

Hence, the missing number is 243.42

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