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Finding the Fourth Proportional to 865.38, 1,295.72 and 732.57

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Solution

The fourth proportional to 865.38, 1,295.72 and 732.57 is: 1,096.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    865.38 : 1,295.72 = 732.57 : x
  2. Step 2: Convert to fraction form
    865.38/1,295.72 = 732.57/x
  3. Step 3: Cross multiply
    865.38x = 1,295.72 × 732.57
  4. Step 4: Simplify right side
    865.38x = 949,205.53
  5. Step 5: Solve for x
    x = 949,205.53/865.38
  6. Step 6: Final answer
    x = 1,096.86

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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.