Finding the Fourth Proportional to 42.24, 63.06 and 40.74
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Solution
The fourth proportional to 42.24, 63.06 and 40.74 is: 60.82
Step by Step Solution
- Step 1: Write the proportion equation
42.24 : 63.06 = 40.74 : x - Step 2: Convert to fraction form
42.24/63.06 = 40.74/x - Step 3: Cross multiply
42.24x = 63.06 × 40.74 - Step 4: Simplify right side
42.24x = 2,569.06 - Step 5: Solve for x
x = 2,569.06/42.24 - Step 6: Final answer
x = 60.82
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.