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Finding the Fourth Proportional to 582.80, 868.20 and 565.80

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Solution

The fourth proportional to 582.80, 868.20 and 565.80 is: 842.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.80 : 868.20 = 565.80 : x
  2. Step 2: Convert to fraction form
    582.80/868.20 = 565.80/x
  3. Step 3: Cross multiply
    582.80x = 868.20 × 565.80
  4. Step 4: Simplify right side
    582.80x = 491,227.56
  5. Step 5: Solve for x
    x = 491,227.56/582.80
  6. Step 6: Final answer
    x = 842.88

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.