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Finding the Third Proportional to 49.63 and 76.88

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Solution

The third proportional to 49.63 and 76.88 is: 119.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    49.63 : 76.88 = 76.88 : x
  2. Step 2: Convert to fraction form
    49.63/76.88 = 76.88/x
  3. Step 3: Cross multiply
    49.63x = 76.88 × 76.88
  4. Step 4: Simplify right side
    49.63x = 5,909.77
  5. Step 5: Solve for x
    x = 5,909.77/49.63
  6. Step 6: Final answer
    x = 119.09

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.