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Finding the Third Proportional to 122.06 and 177.25

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Solution

The third proportional to 122.06 and 177.25 is: 257.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    122.06 : 177.25 = 177.25 : x
  2. Step 2: Convert to fraction form
    122.06/177.25 = 177.25/x
  3. Step 3: Cross multiply
    122.06x = 177.25 × 177.25
  4. Step 4: Simplify right side
    122.06x = 31,417.56
  5. Step 5: Solve for x
    x = 31,417.56/122.06
  6. Step 6: Final answer
    x = 257.39

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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.