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Finding the Fourth Proportional to 26.33, 39.22 and 26.13

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Solution

The fourth proportional to 26.33, 39.22 and 26.13 is: 38.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    26.33 : 39.22 = 26.13 : x
  2. Step 2: Convert to fraction form
    26.33/39.22 = 26.13/x
  3. Step 3: Cross multiply
    26.33x = 39.22 × 26.13
  4. Step 4: Simplify right side
    26.33x = 1,024.82
  5. Step 5: Solve for x
    x = 1,024.82/26.33
  6. Step 6: Final answer
    x = 38.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.