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Finding the Fourth Proportional to 579.34, 868.60 and 266.88

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Solution

The fourth proportional to 579.34, 868.60 and 266.88 is: 400.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.34 : 868.60 = 266.88 : x
  2. Step 2: Convert to fraction form
    579.34/868.60 = 266.88/x
  3. Step 3: Cross multiply
    579.34x = 868.60 × 266.88
  4. Step 4: Simplify right side
    579.34x = 231,811.97
  5. Step 5: Solve for x
    x = 231,811.97/579.34
  6. Step 6: Final answer
    x = 400.13

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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.