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Finding the Fourth Proportional to 579.97, 868.39 and 531.22

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Solution

The fourth proportional to 579.97, 868.39 and 531.22 is: 795.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.97 : 868.39 = 531.22 : x
  2. Step 2: Convert to fraction form
    579.97/868.39 = 531.22/x
  3. Step 3: Cross multiply
    579.97x = 868.39 × 531.22
  4. Step 4: Simplify right side
    579.97x = 461,306.14
  5. Step 5: Solve for x
    x = 461,306.14/579.97
  6. Step 6: Final answer
    x = 795.40

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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.