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Finding the Third Proportional to 66.69 and 94.75

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Solution

The third proportional to 66.69 and 94.75 is: 134.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66.69 : 94.75 = 94.75 : x
  2. Step 2: Convert to fraction form
    66.69/94.75 = 94.75/x
  3. Step 3: Cross multiply
    66.69x = 94.75 × 94.75
  4. Step 4: Simplify right side
    66.69x = 8,977.56
  5. Step 5: Solve for x
    x = 8,977.56/66.69
  6. Step 6: Final answer
    x = 134.62

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.