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Finding the Fourth Proportional to 26.65, 39.93 and 26.17

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Solution

The fourth proportional to 26.65, 39.93 and 26.17 is: 39.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    26.65 : 39.93 = 26.17 : x
  2. Step 2: Convert to fraction form
    26.65/39.93 = 26.17/x
  3. Step 3: Cross multiply
    26.65x = 39.93 × 26.17
  4. Step 4: Simplify right side
    26.65x = 1,044.97
  5. Step 5: Solve for x
    x = 1,044.97/26.65
  6. Step 6: Final answer
    x = 39.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.