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Finding the Third Proportional to 54.47 and 76.36

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Solution

The third proportional to 54.47 and 76.36 is: 107.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    54.47 : 76.36 = 76.36 : x
  2. Step 2: Convert to fraction form
    54.47/76.36 = 76.36/x
  3. Step 3: Cross multiply
    54.47x = 76.36 × 76.36
  4. Step 4: Simplify right side
    54.47x = 5,830.75
  5. Step 5: Solve for x
    x = 5,830.75/54.47
  6. Step 6: Final answer
    x = 107.05

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.