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Finding the Fourth Proportional to 752.40, 1,126.44 and 496.08

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Solution

The fourth proportional to 752.40, 1,126.44 and 496.08 is: 742.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    752.40 : 1,126.44 = 496.08 : x
  2. Step 2: Convert to fraction form
    752.40/1,126.44 = 496.08/x
  3. Step 3: Cross multiply
    752.40x = 1,126.44 × 496.08
  4. Step 4: Simplify right side
    752.40x = 558,804.36
  5. Step 5: Solve for x
    x = 558,804.36/752.40
  6. Step 6: Final answer
    x = 742.70

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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.