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Finding the Fourth Proportional to 752.72, 1,126.01 and 636.44

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Solution

The fourth proportional to 752.72, 1,126.01 and 636.44 is: 952.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    752.72 : 1,126.01 = 636.44 : x
  2. Step 2: Convert to fraction form
    752.72/1,126.01 = 636.44/x
  3. Step 3: Cross multiply
    752.72x = 1,126.01 × 636.44
  4. Step 4: Simplify right side
    752.72x = 716,633.77
  5. Step 5: Solve for x
    x = 716,633.77/752.72
  6. Step 6: Final answer
    x = 952.07

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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.