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Finding the Fourth Proportional to 179.18, 247.13 and 116.91

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Solution

The fourth proportional to 179.18, 247.13 and 116.91 is: 161.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.18 : 247.13 = 116.91 : x
  2. Step 2: Convert to fraction form
    179.18/247.13 = 116.91/x
  3. Step 3: Cross multiply
    179.18x = 247.13 × 116.91
  4. Step 4: Simplify right side
    179.18x = 28,890.73
  5. Step 5: Solve for x
    x = 28,890.73/179.18
  6. Step 6: Final answer
    x = 161.24

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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.