Finding the Fourth Proportional to 42.24, 63.29 and 40.71
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Solution
The fourth proportional to 42.24, 63.29 and 40.71 is: 60.99
Step by Step Solution
- Step 1: Write the proportion equation
42.24 : 63.29 = 40.71 : x - Step 2: Convert to fraction form
42.24/63.29 = 40.71/x - Step 3: Cross multiply
42.24x = 63.29 × 40.71 - Step 4: Simplify right side
42.24x = 2,576.02 - Step 5: Solve for x
x = 2,576.02/42.24 - Step 6: Final answer
x = 60.99
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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.