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Finding the Fourth Proportional to 28.17, 41.92 and 26.26

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Solution

The fourth proportional to 28.17, 41.92 and 26.26 is: 39.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28.17 : 41.92 = 26.26 : x
  2. Step 2: Convert to fraction form
    28.17/41.92 = 26.26/x
  3. Step 3: Cross multiply
    28.17x = 41.92 × 26.26
  4. Step 4: Simplify right side
    28.17x = 1,100.65
  5. Step 5: Solve for x
    x = 1,100.65/28.17
  6. Step 6: Final answer
    x = 39.07

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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.