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Finding the Third Proportional to 130.75 and 191.38

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Solution

The third proportional to 130.75 and 191.38 is: 280.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.75 : 191.38 = 191.38 : x
  2. Step 2: Convert to fraction form
    130.75/191.38 = 191.38/x
  3. Step 3: Cross multiply
    130.75x = 191.38 × 191.38
  4. Step 4: Simplify right side
    130.75x = 36,624.39
  5. Step 5: Solve for x
    x = 36,624.39/130.75
  6. Step 6: Final answer
    x = 280.11

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.