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Finding the Third Proportional to 50.75 and 68.19

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Solution

The third proportional to 50.75 and 68.19 is: 91.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    50.75 : 68.19 = 68.19 : x
  2. Step 2: Convert to fraction form
    50.75/68.19 = 68.19/x
  3. Step 3: Cross multiply
    50.75x = 68.19 × 68.19
  4. Step 4: Simplify right side
    50.75x = 4,649.54
  5. Step 5: Solve for x
    x = 4,649.54/50.75
  6. Step 6: Final answer
    x = 91.62

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.