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Finding the Fourth Proportional to 752.37, 1,125.24 and 670.71

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Solution

The fourth proportional to 752.37, 1,125.24 and 670.71 is: 1,003.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    752.37 : 1,125.24 = 670.71 : x
  2. Step 2: Convert to fraction form
    752.37/1,125.24 = 670.71/x
  3. Step 3: Cross multiply
    752.37x = 1,125.24 × 670.71
  4. Step 4: Simplify right side
    752.37x = 754,709.72
  5. Step 5: Solve for x
    x = 754,709.72/752.37
  6. Step 6: Final answer
    x = 1,003.11

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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.