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Finding the Third Proportional to 21.38 and 46.41

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Solution

The third proportional to 21.38 and 46.41 is: 100.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21.38 : 46.41 = 46.41 : x
  2. Step 2: Convert to fraction form
    21.38/46.41 = 46.41/x
  3. Step 3: Cross multiply
    21.38x = 46.41 × 46.41
  4. Step 4: Simplify right side
    21.38x = 2,153.54
  5. Step 5: Solve for x
    x = 2,153.54/21.38
  6. Step 6: Final answer
    x = 100.75

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.