Finding the Fourth Proportional to 872.24, 1,306.68 and 487.76
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Solution
The fourth proportional to 872.24, 1,306.68 and 487.76 is: 730.70
Step by Step Solution
- Step 1: Write the proportion equation
872.24 : 1,306.68 = 487.76 : x - Step 2: Convert to fraction form
872.24/1,306.68 = 487.76/x - Step 3: Cross multiply
872.24x = 1,306.68 × 487.76 - Step 4: Simplify right side
872.24x = 637,346.24 - Step 5: Solve for x
x = 637,346.24/872.24 - Step 6: Final answer
x = 730.70
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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.