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Finding the Third Proportional to 14.91 and 19.92

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Solution

The third proportional to 14.91 and 19.92 is: 26.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14.91 : 19.92 = 19.92 : x
  2. Step 2: Convert to fraction form
    14.91/19.92 = 19.92/x
  3. Step 3: Cross multiply
    14.91x = 19.92 × 19.92
  4. Step 4: Simplify right side
    14.91x = 396.88
  5. Step 5: Solve for x
    x = 396.88/14.91
  6. Step 6: Final answer
    x = 26.63

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.