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Finding the Third Proportional to 127.34 and 172.97

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Solution

The third proportional to 127.34 and 172.97 is: 234.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.34 : 172.97 = 172.97 : x
  2. Step 2: Convert to fraction form
    127.34/172.97 = 172.97/x
  3. Step 3: Cross multiply
    127.34x = 172.97 × 172.97
  4. Step 4: Simplify right side
    127.34x = 29,918.19
  5. Step 5: Solve for x
    x = 29,918.19/127.34
  6. Step 6: Final answer
    x = 234.94

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.