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Finding the Third Proportional to 6.17 and 13.21

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Solution

The third proportional to 6.17 and 13.21 is: 28.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6.17 : 13.21 = 13.21 : x
  2. Step 2: Convert to fraction form
    6.17/13.21 = 13.21/x
  3. Step 3: Cross multiply
    6.17x = 13.21 × 13.21
  4. Step 4: Simplify right side
    6.17x = 174.50
  5. Step 5: Solve for x
    x = 174.50/6.17
  6. Step 6: Final answer
    x = 28.28

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.