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Finding the Fourth Proportional to 752.94, 1,043.87 and 726.21

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Solution

The fourth proportional to 752.94, 1,043.87 and 726.21 is: 1,006.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    752.94 : 1,043.87 = 726.21 : x
  2. Step 2: Convert to fraction form
    752.94/1,043.87 = 726.21/x
  3. Step 3: Cross multiply
    752.94x = 1,043.87 × 726.21
  4. Step 4: Simplify right side
    752.94x = 758,065.20
  5. Step 5: Solve for x
    x = 758,065.20/752.94
  6. Step 6: Final answer
    x = 1,006.81

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.