Question

find x if the given numbers are in proportion 30 45 50 x
Full explanation ​

Answer 1

Answer:

x = 75

Step-by-step explanation:

The four numbers 30 ,45 , 50 , x are in proportion

30/ 45 = 50/x

taking cross product

30 × x = 45 × 50

x = (45 × 50 ) / 30

x = 5 × 15

x = 75

Answer 2

Step-by-step explanation:

According to the question 30 45 50 x are in proportion.

= 30 : 45 :: 50 : x

= Product of means = Product of extremes

= 45 × 50 = 30 × x ( 45&50 are means , 30&x are

= 2250 = 30 × x extremes )

= 2250 ÷ 30 = x ( 30 is multiplied in the RHS , so

= 75 = x. it will be divided in the LHS )

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