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Finding the Fourth Proportional to 732.44, 1,100.32 and 425.05

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Solution

The fourth proportional to 732.44, 1,100.32 and 425.05 is: 638.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    732.44 : 1,100.32 = 425.05 : x
  2. Step 2: Convert to fraction form
    732.44/1,100.32 = 425.05/x
  3. Step 3: Cross multiply
    732.44x = 1,100.32 × 425.05
  4. Step 4: Simplify right side
    732.44x = 467,687.20
  5. Step 5: Solve for x
    x = 467,687.20/732.44
  6. Step 6: Final answer
    x = 638.53

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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.