If 2, x, and 18 are in continued proportion, find the positive value of x.
6
If 2, x and 18 are in continued proportion, then \(x^2 = 2\times18 = 36\).
\(x = \sqrt{36} = 6\) (taking the positive value).
Hence, the positive value of x is 6.
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Important Questions from Ratio and Proportion
In a mixture of 156 litres, the ratio of milk and water is 7 : 6. How much water should be added to make the ratio 14 : 13?
If the ratio of the first to second number is 3 : 4 and that of the second to the third number is 8 : 5, and sum of three numbers is 190 then the third number is:
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