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Finding the Third Proportional to 172.13 and 234.88

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Solution

The third proportional to 172.13 and 234.88 is: 320.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    172.13 : 234.88 = 234.88 : x
  2. Step 2: Convert to fraction form
    172.13/234.88 = 234.88/x
  3. Step 3: Cross multiply
    172.13x = 234.88 × 234.88
  4. Step 4: Simplify right side
    172.13x = 55,168.10
  5. Step 5: Solve for x
    x = 55,168.10/172.13
  6. Step 6: Final answer
    x = 320.51

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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.