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Finding the Fourth Proportional to 447.10, 616.28 and 353.68

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Solution

The fourth proportional to 447.10, 616.28 and 353.68 is: 487.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.10 : 616.28 = 353.68 : x
  2. Step 2: Convert to fraction form
    447.10/616.28 = 353.68/x
  3. Step 3: Cross multiply
    447.10x = 616.28 × 353.68
  4. Step 4: Simplify right side
    447.10x = 217,965.91
  5. Step 5: Solve for x
    x = 217,965.91/447.10
  6. Step 6: Final answer
    x = 487.51

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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.