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Finding the Fourth Proportional to 562.38, 840.09 and 432.33

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Solution

The fourth proportional to 562.38, 840.09 and 432.33 is: 645.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.38 : 840.09 = 432.33 : x
  2. Step 2: Convert to fraction form
    562.38/840.09 = 432.33/x
  3. Step 3: Cross multiply
    562.38x = 840.09 × 432.33
  4. Step 4: Simplify right side
    562.38x = 363,196.11
  5. Step 5: Solve for x
    x = 363,196.11/562.38
  6. Step 6: Final answer
    x = 645.82

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.