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Finding the Fourth Proportional to 887.97, 1,332.13 and 425.44

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Solution

The fourth proportional to 887.97, 1,332.13 and 425.44 is: 638.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.97 : 1,332.13 = 425.44 : x
  2. Step 2: Convert to fraction form
    887.97/1,332.13 = 425.44/x
  3. Step 3: Cross multiply
    887.97x = 1,332.13 × 425.44
  4. Step 4: Simplify right side
    887.97x = 566,732.60
  5. Step 5: Solve for x
    x = 566,732.60/887.97
  6. Step 6: Final answer
    x = 638.23

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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.