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Finding the Third Proportional to 55.44 and 60.69

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Solution

The third proportional to 55.44 and 60.69 is: 66.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.44 : 60.69 = 60.69 : x
  2. Step 2: Convert to fraction form
    55.44/60.69 = 60.69/x
  3. Step 3: Cross multiply
    55.44x = 60.69 × 60.69
  4. Step 4: Simplify right side
    55.44x = 3,682.97
  5. Step 5: Solve for x
    x = 3,682.97/55.44
  6. Step 6: Final answer
    x = 66.43

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.