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Finding the Fourth Proportional to 737.16, 1,017.09 and 638.73

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Solution

The fourth proportional to 737.16, 1,017.09 and 638.73 is: 881.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.16 : 1,017.09 = 638.73 : x
  2. Step 2: Convert to fraction form
    737.16/1,017.09 = 638.73/x
  3. Step 3: Cross multiply
    737.16x = 1,017.09 × 638.73
  4. Step 4: Simplify right side
    737.16x = 649,645.90
  5. Step 5: Solve for x
    x = 649,645.90/737.16
  6. Step 6: Final answer
    x = 881.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.