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Finding the Fourth Proportional to 179.62, 247.91 and 114.20

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Solution

The fourth proportional to 179.62, 247.91 and 114.20 is: 157.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.62 : 247.91 = 114.20 : x
  2. Step 2: Convert to fraction form
    179.62/247.91 = 114.20/x
  3. Step 3: Cross multiply
    179.62x = 247.91 × 114.20
  4. Step 4: Simplify right side
    179.62x = 28,311.32
  5. Step 5: Solve for x
    x = 28,311.32/179.62
  6. Step 6: Final answer
    x = 157.62

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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.