Question

If 10,x, 90 are in continued proportion, find the value of x.

Answer 1

Answer:

$= > \frac{10}{x} = \frac{x}{90} \\ = > {x}^{2} = 90 \times 10 \\ = > x = \sqrt{900} \\ = > x = + - 30.$

Answer 2

Answer:

hey!

Step-by-step explanation:

x= 30 or x=-30

As it is given that 18 , x and 50 are in continued proportion

by proportionality law if a ,b and c are in continued proportion then

a :b = b: c

so for the given values applying these

then it will become

18 : x = x : 50

also a:b=

so cross multiplying

18 * 50 = x²

900 =x²

taking square root of both sidesx=±30

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