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Finding the Third Proportional to 113.20 and 176.48

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Solution

The third proportional to 113.20 and 176.48 is: 275.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    113.20 : 176.48 = 176.48 : x
  2. Step 2: Convert to fraction form
    113.20/176.48 = 176.48/x
  3. Step 3: Cross multiply
    113.20x = 176.48 × 176.48
  4. Step 4: Simplify right side
    113.20x = 31,146.73
  5. Step 5: Solve for x
    x = 31,146.73/113.20
  6. Step 6: Final answer
    x = 275.14

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.