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Finding the Fourth Proportional to 27.38, 41.30 and 26.28

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Solution

The fourth proportional to 27.38, 41.30 and 26.28 is: 39.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    27.38 : 41.30 = 26.28 : x
  2. Step 2: Convert to fraction form
    27.38/41.30 = 26.28/x
  3. Step 3: Cross multiply
    27.38x = 41.30 × 26.28
  4. Step 4: Simplify right side
    27.38x = 1,085.36
  5. Step 5: Solve for x
    x = 1,085.36/27.38
  6. Step 6: Final answer
    x = 39.64

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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.