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Finding the Fourth Proportional to 887.97, 1,331.24 and 545.25

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Solution

The fourth proportional to 887.97, 1,331.24 and 545.25 is: 817.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.97 : 1,331.24 = 545.25 : x
  2. Step 2: Convert to fraction form
    887.97/1,331.24 = 545.25/x
  3. Step 3: Cross multiply
    887.97x = 1,331.24 × 545.25
  4. Step 4: Simplify right side
    887.97x = 725,855.88
  5. Step 5: Solve for x
    x = 725,855.88/887.97
  6. Step 6: Final answer
    x = 817.43

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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.