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Finding the Fourth Proportional to 579.10, 868.54 and 270.87

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Solution

The fourth proportional to 579.10, 868.54 and 270.87 is: 406.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.10 : 868.54 = 270.87 : x
  2. Step 2: Convert to fraction form
    579.10/868.54 = 270.87/x
  3. Step 3: Cross multiply
    579.10x = 868.54 × 270.87
  4. Step 4: Simplify right side
    579.10x = 235,259.30
  5. Step 5: Solve for x
    x = 235,259.30/579.10
  6. Step 6: Final answer
    x = 406.25

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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.