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Finding the Fourth Proportional to 22.85, 34.43 and 18.37

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Solution

The fourth proportional to 22.85, 34.43 and 18.37 is: 27.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    22.85 : 34.43 = 18.37 : x
  2. Step 2: Convert to fraction form
    22.85/34.43 = 18.37/x
  3. Step 3: Cross multiply
    22.85x = 34.43 × 18.37
  4. Step 4: Simplify right side
    22.85x = 632.48
  5. Step 5: Solve for x
    x = 632.48/22.85
  6. Step 6: Final answer
    x = 27.68

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.