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Finding the Third Proportional to 15.13 and 28.38

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Solution

The third proportional to 15.13 and 28.38 is: 53.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15.13 : 28.38 = 28.38 : x
  2. Step 2: Convert to fraction form
    15.13/28.38 = 28.38/x
  3. Step 3: Cross multiply
    15.13x = 28.38 × 28.38
  4. Step 4: Simplify right side
    15.13x = 805.14
  5. Step 5: Solve for x
    x = 805.14/15.13
  6. Step 6: Final answer
    x = 53.23

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Why These Related Problems?

These problems maintain the same ratio (1.88) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.