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Finding the Fourth Proportional to 179.80, 248.02 and 102.12

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Solution

The fourth proportional to 179.80, 248.02 and 102.12 is: 140.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.80 : 248.02 = 102.12 : x
  2. Step 2: Convert to fraction form
    179.80/248.02 = 102.12/x
  3. Step 3: Cross multiply
    179.80x = 248.02 × 102.12
  4. Step 4: Simplify right side
    179.80x = 25,327.80
  5. Step 5: Solve for x
    x = 25,327.80/179.80
  6. Step 6: Final answer
    x = 140.87

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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.