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Finding the Fourth Proportional to 447.43, 616.99 and 354.03

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Solution

The fourth proportional to 447.43, 616.99 and 354.03 is: 488.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.43 : 616.99 = 354.03 : x
  2. Step 2: Convert to fraction form
    447.43/616.99 = 354.03/x
  3. Step 3: Cross multiply
    447.43x = 616.99 × 354.03
  4. Step 4: Simplify right side
    447.43x = 218,432.97
  5. Step 5: Solve for x
    x = 218,432.97/447.43
  6. Step 6: Final answer
    x = 488.19

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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.