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Finding the Fourth Proportional to 179.73, 247.50 and 142.79

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Solution

The fourth proportional to 179.73, 247.50 and 142.79 is: 196.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.73 : 247.50 = 142.79 : x
  2. Step 2: Convert to fraction form
    179.73/247.50 = 142.79/x
  3. Step 3: Cross multiply
    179.73x = 247.50 × 142.79
  4. Step 4: Simplify right side
    179.73x = 35,339.29
  5. Step 5: Solve for x
    x = 35,339.29/179.73
  6. Step 6: Final answer
    x = 196.62

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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.