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Finding the Third Proportional to 148.88 and 239.06

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Solution

The third proportional to 148.88 and 239.06 is: 383.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.88 : 239.06 = 239.06 : x
  2. Step 2: Convert to fraction form
    148.88/239.06 = 239.06/x
  3. Step 3: Cross multiply
    148.88x = 239.06 × 239.06
  4. Step 4: Simplify right side
    148.88x = 57,150.88
  5. Step 5: Solve for x
    x = 57,150.88/148.88
  6. Step 6: Final answer
    x = 383.88

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.