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Finding the Fourth Proportional to 579.14, 869.11 and 254.73

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Solution

The fourth proportional to 579.14, 869.11 and 254.73 is: 382.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.14 : 869.11 = 254.73 : x
  2. Step 2: Convert to fraction form
    579.14/869.11 = 254.73/x
  3. Step 3: Cross multiply
    579.14x = 869.11 × 254.73
  4. Step 4: Simplify right side
    579.14x = 221,391.20
  5. Step 5: Solve for x
    x = 221,391.20/579.14
  6. Step 6: Final answer
    x = 382.28

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Double scale
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Similar ratio
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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.