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Finding the Third Proportional to 98.72 and 153.14

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Solution

The third proportional to 98.72 and 153.14 is: 237.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.72 : 153.14 = 153.14 : x
  2. Step 2: Convert to fraction form
    98.72/153.14 = 153.14/x
  3. Step 3: Cross multiply
    98.72x = 153.14 × 153.14
  4. Step 4: Simplify right side
    98.72x = 23,452.05
  5. Step 5: Solve for x
    x = 23,452.05/98.72
  6. Step 6: Final answer
    x = 237.56

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.