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Finding the Fourth Proportional to 888.47, 1,331.85 and 449.53

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Solution

The fourth proportional to 888.47, 1,331.85 and 449.53 is: 673.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.47 : 1,331.85 = 449.53 : x
  2. Step 2: Convert to fraction form
    888.47/1,331.85 = 449.53/x
  3. Step 3: Cross multiply
    888.47x = 1,331.85 × 449.53
  4. Step 4: Simplify right side
    888.47x = 598,707.36
  5. Step 5: Solve for x
    x = 598,707.36/888.47
  6. Step 6: Final answer
    x = 673.86

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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.