Finding the Fourth Proportional to 487.87, 728.84 and 371.99
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Solution
The fourth proportional to 487.87, 728.84 and 371.99 is: 555.72
Step by Step Solution
- Step 1: Write the proportion equation
487.87 : 728.84 = 371.99 : x - Step 2: Convert to fraction form
487.87/728.84 = 371.99/x - Step 3: Cross multiply
487.87x = 728.84 × 371.99 - Step 4: Simplify right side
487.87x = 271,115.69 - Step 5: Solve for x
x = 271,115.69/487.87 - Step 6: Final answer
x = 555.72
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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.