Finding the Fourth Proportional to 42.12, 63.03 and 37.08
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Solution
The fourth proportional to 42.12, 63.03 and 37.08 is: 55.49
Step by Step Solution
- Step 1: Write the proportion equation
42.12 : 63.03 = 37.08 : x - Step 2: Convert to fraction form
42.12/63.03 = 37.08/x - Step 3: Cross multiply
42.12x = 63.03 × 37.08 - Step 4: Simplify right side
42.12x = 2,337.15 - Step 5: Solve for x
x = 2,337.15/42.12 - Step 6: Final answer
x = 55.49
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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.