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Finding the Fourth Proportional to 737.62, 1,025.05 and 728.44

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Solution

The fourth proportional to 737.62, 1,025.05 and 728.44 is: 1,012.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.62 : 1,025.05 = 728.44 : x
  2. Step 2: Convert to fraction form
    737.62/1,025.05 = 728.44/x
  3. Step 3: Cross multiply
    737.62x = 1,025.05 × 728.44
  4. Step 4: Simplify right side
    737.62x = 746,687.42
  5. Step 5: Solve for x
    x = 746,687.42/737.62
  6. Step 6: Final answer
    x = 1,012.29

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.