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Finding the Fourth Proportional to 27.59, 38.02 and 22.65

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Solution

The fourth proportional to 27.59, 38.02 and 22.65 is: 31.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    27.59 : 38.02 = 22.65 : x
  2. Step 2: Convert to fraction form
    27.59/38.02 = 22.65/x
  3. Step 3: Cross multiply
    27.59x = 38.02 × 22.65
  4. Step 4: Simplify right side
    27.59x = 861.15
  5. Step 5: Solve for x
    x = 861.15/27.59
  6. Step 6: Final answer
    x = 31.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.