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Finding the Fourth Proportional to 179.14, 247.08 and 129.35

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Solution

The fourth proportional to 179.14, 247.08 and 129.35 is: 178.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.14 : 247.08 = 129.35 : x
  2. Step 2: Convert to fraction form
    179.14/247.08 = 129.35/x
  3. Step 3: Cross multiply
    179.14x = 247.08 × 129.35
  4. Step 4: Simplify right side
    179.14x = 31,959.05
  5. Step 5: Solve for x
    x = 31,959.05/179.14
  6. Step 6: Final answer
    x = 178.41

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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.