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Finding the Fourth Proportional to 579.25, 868.17 and 347.98

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Solution

The fourth proportional to 579.25, 868.17 and 347.98 is: 521.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.25 : 868.17 = 347.98 : x
  2. Step 2: Convert to fraction form
    579.25/868.17 = 347.98/x
  3. Step 3: Cross multiply
    579.25x = 868.17 × 347.98
  4. Step 4: Simplify right side
    579.25x = 302,105.80
  5. Step 5: Solve for x
    x = 302,105.80/579.25
  6. Step 6: Final answer
    x = 521.55

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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.