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Finding the Fourth Proportional to 892.95, 1,338.85 and 481.06

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Solution

The fourth proportional to 892.95, 1,338.85 and 481.06 is: 721.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    892.95 : 1,338.85 = 481.06 : x
  2. Step 2: Convert to fraction form
    892.95/1,338.85 = 481.06/x
  3. Step 3: Cross multiply
    892.95x = 1,338.85 × 481.06
  4. Step 4: Simplify right side
    892.95x = 644,067.18
  5. Step 5: Solve for x
    x = 644,067.18/892.95
  6. Step 6: Final answer
    x = 721.28

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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.