Finding the Fourth Proportional to 409.97, 615.17 and 287.99
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Solution
The fourth proportional to 409.97, 615.17 and 287.99 is: 432.14
Step by Step Solution
- Step 1: Write the proportion equation
409.97 : 615.17 = 287.99 : x - Step 2: Convert to fraction form
409.97/615.17 = 287.99/x - Step 3: Cross multiply
409.97x = 615.17 × 287.99 - Step 4: Simplify right side
409.97x = 177,160.45 - Step 5: Solve for x
x = 177,160.45/409.97 - Step 6: Final answer
x = 432.14
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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.