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Finding the Third Proportional to 126.25 and 191.13

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Solution

The third proportional to 126.25 and 191.13 is: 289.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.25 : 191.13 = 191.13 : x
  2. Step 2: Convert to fraction form
    126.25/191.13 = 191.13/x
  3. Step 3: Cross multiply
    126.25x = 191.13 × 191.13
  4. Step 4: Simplify right side
    126.25x = 36,528.77
  5. Step 5: Solve for x
    x = 36,528.77/126.25
  6. Step 6: Final answer
    x = 289.34

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.