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Finding the Third Proportional to 38.25 and 99.75

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Solution

The third proportional to 38.25 and 99.75 is: 260.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    38.25 : 99.75 = 99.75 : x
  2. Step 2: Convert to fraction form
    38.25/99.75 = 99.75/x
  3. Step 3: Cross multiply
    38.25x = 99.75 × 99.75
  4. Step 4: Simplify right side
    38.25x = 9,950.06
  5. Step 5: Solve for x
    x = 9,950.06/38.25
  6. Step 6: Final answer
    x = 260.13

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Why These Related Problems?

These problems maintain the same ratio (2.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.