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Finding the Fourth Proportional to 279.17, 385.17 and 174.27

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Solution

The fourth proportional to 279.17, 385.17 and 174.27 is: 240.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    279.17 : 385.17 = 174.27 : x
  2. Step 2: Convert to fraction form
    279.17/385.17 = 174.27/x
  3. Step 3: Cross multiply
    279.17x = 385.17 × 174.27
  4. Step 4: Simplify right side
    279.17x = 67,123.58
  5. Step 5: Solve for x
    x = 67,123.58/279.17
  6. Step 6: Final answer
    x = 240.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.