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Finding the Third Proportional to 21.41 and 34.07

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Solution

The third proportional to 21.41 and 34.07 is: 54.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21.41 : 34.07 = 34.07 : x
  2. Step 2: Convert to fraction form
    21.41/34.07 = 34.07/x
  3. Step 3: Cross multiply
    21.41x = 34.07 × 34.07
  4. Step 4: Simplify right side
    21.41x = 1,160.52
  5. Step 5: Solve for x
    x = 1,160.52/21.41
  6. Step 6: Final answer
    x = 54.20

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.