Finding the Fourth Proportional to 42.12, 63.18 and 34.02
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Solution
The fourth proportional to 42.12, 63.18 and 34.02 is: 51.03
Step by Step Solution
- Step 1: Write the proportion equation
42.12 : 63.18 = 34.02 : x - Step 2: Convert to fraction form
42.12/63.18 = 34.02/x - Step 3: Cross multiply
42.12x = 63.18 × 34.02 - Step 4: Simplify right side
42.12x = 2,149.38 - Step 5: Solve for x
x = 2,149.38/42.12 - Step 6: Final answer
x = 51.03
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.