Question
Find the fourth proportion of (2k + 1), (4k + 2) and
(6k + 3). (Note: 'k' is the smallest two-digit prime number.)Solution
'k' = 11 2k + 1 = 2 × 11 + 1 = 23 4k + 2 = 4 × 11 + 2 = 46 6k + 3 = 6 × 11 + 3 = 69 Let the fourth proportion be 'm'. 23 : 46 :: 69 : m So, 23 × m = 46 × 69 Or, 'm' = 138
More Ratio and proportion Questions
Determine the simplified value of the given mathematical expression.
(150% of 950) ÷ ? = 25
Evaluate:
√729 + √49 - √16 + 1/√64
What will come in the place of question mark (?) in the given expression?
? = (20 × 62 – 342 )
1299.999 ÷ 325.018 × 24.996 = ?
Simplify: 0.6 ÷ 0.04 + 0.125 × 0.8
Simplify the following expression and find the final value:
(18 ÷ 6 of 2 + 7 of 5) ÷ 5
What will come in the place of question mark (?) in the given expression?
28 X 3.5 + 12 X 6 = ? X 4 + 90
- If (6 × 225 – 432 ÷ 18) ÷ 24 = √2025 – x, what is the value of ‘x’?
1428 ÷ 17 = ? % of 120
