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Finding the Fourth Proportional to 1,793.22, 2,691.45 and 818.79

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Solution

The fourth proportional to 1,793.22, 2,691.45 and 818.79 is: 1,228.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,793.22 : 2,691.45 = 818.79 : x
  2. Step 2: Convert to fraction form
    1,793.22/2,691.45 = 818.79/x
  3. Step 3: Cross multiply
    1,793.22x = 2,691.45 × 818.79
  4. Step 4: Simplify right side
    1,793.22x = 2,203,732.35
  5. Step 5: Solve for x
    x = 2,203,732.35/1,793.22
  6. Step 6: Final answer
    x = 1,228.92

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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.