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Finding the Fourth Proportional to 782.44, 1,078.92 and 594.52

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Solution

The fourth proportional to 782.44, 1,078.92 and 594.52 is: 819.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    782.44 : 1,078.92 = 594.52 : x
  2. Step 2: Convert to fraction form
    782.44/1,078.92 = 594.52/x
  3. Step 3: Cross multiply
    782.44x = 1,078.92 × 594.52
  4. Step 4: Simplify right side
    782.44x = 641,439.52
  5. Step 5: Solve for x
    x = 641,439.52/782.44
  6. Step 6: Final answer
    x = 819.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.