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Finding the Third Proportional to 39.88 and 63.63

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Solution

The third proportional to 39.88 and 63.63 is: 101.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39.88 : 63.63 = 63.63 : x
  2. Step 2: Convert to fraction form
    39.88/63.63 = 63.63/x
  3. Step 3: Cross multiply
    39.88x = 63.63 × 63.63
  4. Step 4: Simplify right side
    39.88x = 4,048.14
  5. Step 5: Solve for x
    x = 4,048.14/39.88
  6. Step 6: Final answer
    x = 101.52

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.