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Finding the Fourth Proportional to 179.75, 248.06 and 102.12

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Solution

The fourth proportional to 179.75, 248.06 and 102.12 is: 140.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.75 : 248.06 = 102.12 : x
  2. Step 2: Convert to fraction form
    179.75/248.06 = 102.12/x
  3. Step 3: Cross multiply
    179.75x = 248.06 × 102.12
  4. Step 4: Simplify right side
    179.75x = 25,331.38
  5. Step 5: Solve for x
    x = 25,331.38/179.75
  6. Step 6: Final answer
    x = 140.93

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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.