Question
What is the fourth proportional to 5, 9,
25?Solution
Let the fourth proportion be x. Then, => 5 : 9 :: 25 : x => 5x = 25 × 9 => x = (25 × 9)/5 = 45
More Ratio and proportion Questions
- Find the wrong number in the given number series.
8, 12, 21, 46, 95, 195 147Â Â 490Â Â 707Â Â Â 831Â Â Â Â 895Â Â Â 930
7, 15, 31, 79, 271, 1221
Find the wrong number in the given number series.
13, 20, 31, 44, 62, 80
2, 4, 16, 48, 240, 1440, 10080
131, 212, 261, 286, 295, 299
- Find the wrong number in the given number series.
32.6, 36.4, 40.2, 43.6, 47.8, 51.6 - Find the wrong number in the given number series.
5, 10, 30, 120, 480, 3600 - In the given number series, find the wrong number.
1, 4, 9, 16, 25, 38, 49 12, 28, 64, 128, 228, 379
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