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Finding the Third Proportional to 99.67 and 151.64

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Solution

The third proportional to 99.67 and 151.64 is: 230.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    99.67 : 151.64 = 151.64 : x
  2. Step 2: Convert to fraction form
    99.67/151.64 = 151.64/x
  3. Step 3: Cross multiply
    99.67x = 151.64 × 151.64
  4. Step 4: Simplify right side
    99.67x = 22,993.99
  5. Step 5: Solve for x
    x = 22,993.99/99.67
  6. Step 6: Final answer
    x = 230.71

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.