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Finding the Fourth Proportional to 27.80, 38.27 and 27.29

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Solution

The fourth proportional to 27.80, 38.27 and 27.29 is: 37.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    27.80 : 38.27 = 27.29 : x
  2. Step 2: Convert to fraction form
    27.80/38.27 = 27.29/x
  3. Step 3: Cross multiply
    27.80x = 38.27 × 27.29
  4. Step 4: Simplify right side
    27.80x = 1,044.06
  5. Step 5: Solve for x
    x = 1,044.06/27.80
  6. Step 6: Final answer
    x = 37.56

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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.