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Finding the Fourth Proportional to 22.78, 34.14 and 10.74

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Solution

The fourth proportional to 22.78, 34.14 and 10.74 is: 16.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    22.78 : 34.14 = 10.74 : x
  2. Step 2: Convert to fraction form
    22.78/34.14 = 10.74/x
  3. Step 3: Cross multiply
    22.78x = 34.14 × 10.74
  4. Step 4: Simplify right side
    22.78x = 366.66
  5. Step 5: Solve for x
    x = 366.66/22.78
  6. Step 6: Final answer
    x = 16.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.