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Finding the Third Proportional to 22 and 47.78

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Solution

The third proportional to 22 and 47.78 is: 103.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    22 : 47.78 = 47.78 : x
  2. Step 2: Convert to fraction form
    22/47.78 = 47.78/x
  3. Step 3: Cross multiply
    22x = 47.78 × 47.78
  4. Step 4: Simplify right side
    22x = 2,283.05
  5. Step 5: Solve for x
    x = 2,283.05/22
  6. Step 6: Final answer
    x = 103.77

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.