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Finding the Third Proportional to 18.51 and 22.78

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Solution

The third proportional to 18.51 and 22.78 is: 28.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18.51 : 22.78 = 22.78 : x
  2. Step 2: Convert to fraction form
    18.51/22.78 = 22.78/x
  3. Step 3: Cross multiply
    18.51x = 22.78 × 22.78
  4. Step 4: Simplify right side
    18.51x = 518.99
  5. Step 5: Solve for x
    x = 518.99/18.51
  6. Step 6: Final answer
    x = 28.04

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Why These Related Problems?

These problems maintain the same ratio (1.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.