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Finding the Fourth Proportional to 27.54, 38.16 and 26.55

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Solution

The fourth proportional to 27.54, 38.16 and 26.55 is: 36.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    27.54 : 38.16 = 26.55 : x
  2. Step 2: Convert to fraction form
    27.54/38.16 = 26.55/x
  3. Step 3: Cross multiply
    27.54x = 38.16 × 26.55
  4. Step 4: Simplify right side
    27.54x = 1,013.15
  5. Step 5: Solve for x
    x = 1,013.15/27.54
  6. Step 6: Final answer
    x = 36.79

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.