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Finding the Fourth Proportional to 26, 38.80 and 23.76

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Solution

The fourth proportional to 26, 38.80 and 23.76 is: 35.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    26 : 38.80 = 23.76 : x
  2. Step 2: Convert to fraction form
    26/38.80 = 23.76/x
  3. Step 3: Cross multiply
    26x = 38.80 × 23.76
  4. Step 4: Simplify right side
    26x = 921.89
  5. Step 5: Solve for x
    x = 921.89/26
  6. Step 6: Final answer
    x = 35.46

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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.