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Finding the Fourth Proportional to 472.96, 709.17 and 432.19

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Solution

The fourth proportional to 472.96, 709.17 and 432.19 is: 648.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.96 : 709.17 = 432.19 : x
  2. Step 2: Convert to fraction form
    472.96/709.17 = 432.19/x
  3. Step 3: Cross multiply
    472.96x = 709.17 × 432.19
  4. Step 4: Simplify right side
    472.96x = 306,496.18
  5. Step 5: Solve for x
    x = 306,496.18/472.96
  6. Step 6: Final answer
    x = 648.04

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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.