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Finding the Third Proportional to 152.75 and 171.88

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Solution

The third proportional to 152.75 and 171.88 is: 193.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.75 : 171.88 = 171.88 : x
  2. Step 2: Convert to fraction form
    152.75/171.88 = 171.88/x
  3. Step 3: Cross multiply
    152.75x = 171.88 × 171.88
  4. Step 4: Simplify right side
    152.75x = 29,541.02
  5. Step 5: Solve for x
    x = 29,541.02/152.75
  6. Step 6: Final answer
    x = 193.39

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Why These Related Problems?

These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.