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Finding the Fourth Proportional to 488.39, 731.10 and 282.38

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Solution

The fourth proportional to 488.39, 731.10 and 282.38 is: 422.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.39 : 731.10 = 282.38 : x
  2. Step 2: Convert to fraction form
    488.39/731.10 = 282.38/x
  3. Step 3: Cross multiply
    488.39x = 731.10 × 282.38
  4. Step 4: Simplify right side
    488.39x = 206,448.02
  5. Step 5: Solve for x
    x = 206,448.02/488.39
  6. Step 6: Final answer
    x = 422.71

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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.