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Finding the Fourth Proportional to 747.26, 1,127.58 and 717.29

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Solution

The fourth proportional to 747.26, 1,127.58 and 717.29 is: 1,082.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    747.26 : 1,127.58 = 717.29 : x
  2. Step 2: Convert to fraction form
    747.26/1,127.58 = 717.29/x
  3. Step 3: Cross multiply
    747.26x = 1,127.58 × 717.29
  4. Step 4: Simplify right side
    747.26x = 808,801.86
  5. Step 5: Solve for x
    x = 808,801.86/747.26
  6. Step 6: Final answer
    x = 1,082.36

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.