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Finding the Third Proportional to 122.13 and 176.77

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Solution

The third proportional to 122.13 and 176.77 is: 255.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    122.13 : 176.77 = 176.77 : x
  2. Step 2: Convert to fraction form
    122.13/176.77 = 176.77/x
  3. Step 3: Cross multiply
    122.13x = 176.77 × 176.77
  4. Step 4: Simplify right side
    122.13x = 31,246.09
  5. Step 5: Solve for x
    x = 31,246.09/122.13
  6. Step 6: Final answer
    x = 255.84

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.