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Finding the Fourth Proportional to 179.52, 247.66 and 142.53

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Solution

The fourth proportional to 179.52, 247.66 and 142.53 is: 196.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.52 : 247.66 = 142.53 : x
  2. Step 2: Convert to fraction form
    179.52/247.66 = 142.53/x
  3. Step 3: Cross multiply
    179.52x = 247.66 × 142.53
  4. Step 4: Simplify right side
    179.52x = 35,298.98
  5. Step 5: Solve for x
    x = 35,298.98/179.52
  6. Step 6: Final answer
    x = 196.63

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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.