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Finding the Third Proportional to 10.28 and 21.04

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Solution

The third proportional to 10.28 and 21.04 is: 43.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10.28 : 21.04 = 21.04 : x
  2. Step 2: Convert to fraction form
    10.28/21.04 = 21.04/x
  3. Step 3: Cross multiply
    10.28x = 21.04 × 21.04
  4. Step 4: Simplify right side
    10.28x = 442.72
  5. Step 5: Solve for x
    x = 442.72/10.28
  6. Step 6: Final answer
    x = 43.05

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.