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Finding the Fourth Proportional to 819.96, 1,227.18 and 752.52

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Solution

The fourth proportional to 819.96, 1,227.18 and 752.52 is: 1,126.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    819.96 : 1,227.18 = 752.52 : x
  2. Step 2: Convert to fraction form
    819.96/1,227.18 = 752.52/x
  3. Step 3: Cross multiply
    819.96x = 1,227.18 × 752.52
  4. Step 4: Simplify right side
    819.96x = 923,477.49
  5. Step 5: Solve for x
    x = 923,477.49/819.96
  6. Step 6: Final answer
    x = 1,126.25

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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.