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Finding the Third Proportional to 135 and 178.88

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Solution

The third proportional to 135 and 178.88 is: 237.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    135 : 178.88 = 178.88 : x
  2. Step 2: Convert to fraction form
    135/178.88 = 178.88/x
  3. Step 3: Cross multiply
    135x = 178.88 × 178.88
  4. Step 4: Simplify right side
    135x = 31,996.27
  5. Step 5: Solve for x
    x = 31,996.27/135
  6. Step 6: Final answer
    x = 237.01

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.