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Finding the Fourth Proportional to 892.88, 1,338.71 and 546.33

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Solution

The fourth proportional to 892.88, 1,338.71 and 546.33 is: 819.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    892.88 : 1,338.71 = 546.33 : x
  2. Step 2: Convert to fraction form
    892.88/1,338.71 = 546.33/x
  3. Step 3: Cross multiply
    892.88x = 1,338.71 × 546.33
  4. Step 4: Simplify right side
    892.88x = 731,374.70
  5. Step 5: Solve for x
    x = 731,374.70/892.88
  6. Step 6: Final answer
    x = 819.12

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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.