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Finding the Fourth Proportional to 29.09, 43.37 and 26.81

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Solution

The fourth proportional to 29.09, 43.37 and 26.81 is: 39.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    29.09 : 43.37 = 26.81 : x
  2. Step 2: Convert to fraction form
    29.09/43.37 = 26.81/x
  3. Step 3: Cross multiply
    29.09x = 43.37 × 26.81
  4. Step 4: Simplify right side
    29.09x = 1,162.40
  5. Step 5: Solve for x
    x = 1,162.40/29.09
  6. Step 6: Final answer
    x = 39.97

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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.