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Finding the Fourth Proportional to 752.97, 1,135.26 and 748.29

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Solution

The fourth proportional to 752.97, 1,135.26 and 748.29 is: 1,128.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    752.97 : 1,135.26 = 748.29 : x
  2. Step 2: Convert to fraction form
    752.97/1,135.26 = 748.29/x
  3. Step 3: Cross multiply
    752.97x = 1,135.26 × 748.29
  4. Step 4: Simplify right side
    752.97x = 849,503.71
  5. Step 5: Solve for x
    x = 849,503.71/752.97
  6. Step 6: Final answer
    x = 1,128.20

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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.