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Finding the Fourth Proportional to 1,744.88, 2,617.32 and 819.76

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Solution

The fourth proportional to 1,744.88, 2,617.32 and 819.76 is: 1,229.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,744.88 : 2,617.32 = 819.76 : x
  2. Step 2: Convert to fraction form
    1,744.88/2,617.32 = 819.76/x
  3. Step 3: Cross multiply
    1,744.88x = 2,617.32 × 819.76
  4. Step 4: Simplify right side
    1,744.88x = 2,145,567.70
  5. Step 5: Solve for x
    x = 2,145,567.70/1,744.88
  6. Step 6: Final answer
    x = 1,229.64

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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.