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Finding the Third Proportional to 20.21 and 29.56

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Solution

The third proportional to 20.21 and 29.56 is: 43.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20.21 : 29.56 = 29.56 : x
  2. Step 2: Convert to fraction form
    20.21/29.56 = 29.56/x
  3. Step 3: Cross multiply
    20.21x = 29.56 × 29.56
  4. Step 4: Simplify right side
    20.21x = 873.89
  5. Step 5: Solve for x
    x = 873.89/20.21
  6. Step 6: Final answer
    x = 43.24

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.