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Finding the Fourth Proportional to 615.28, 849.17 and 353.29

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Solution

The fourth proportional to 615.28, 849.17 and 353.29 is: 487.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.28 : 849.17 = 353.29 : x
  2. Step 2: Convert to fraction form
    615.28/849.17 = 353.29/x
  3. Step 3: Cross multiply
    615.28x = 849.17 × 353.29
  4. Step 4: Simplify right side
    615.28x = 299,997.26
  5. Step 5: Solve for x
    x = 299,997.26/615.28
  6. Step 6: Final answer
    x = 487.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.