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Finding the Fourth Proportional to 731.52, 1,095.44 and 628.32

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Solution

The fourth proportional to 731.52, 1,095.44 and 628.32 is: 940.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    731.52 : 1,095.44 = 628.32 : x
  2. Step 2: Convert to fraction form
    731.52/1,095.44 = 628.32/x
  3. Step 3: Cross multiply
    731.52x = 1,095.44 × 628.32
  4. Step 4: Simplify right side
    731.52x = 688,286.86
  5. Step 5: Solve for x
    x = 688,286.86/731.52
  6. Step 6: Final answer
    x = 940.90

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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.