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Finding the Third Proportional to 63.94 and 77.72

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Solution

The third proportional to 63.94 and 77.72 is: 94.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.94 : 77.72 = 77.72 : x
  2. Step 2: Convert to fraction form
    63.94/77.72 = 77.72/x
  3. Step 3: Cross multiply
    63.94x = 77.72 × 77.72
  4. Step 4: Simplify right side
    63.94x = 6,040.20
  5. Step 5: Solve for x
    x = 6,040.20/63.94
  6. Step 6: Final answer
    x = 94.47

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Why These Related Problems?

These problems maintain the same ratio (1.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.