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Finding the Fourth Proportional to 33.97, 50.67 and 31.99

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Solution

The fourth proportional to 33.97, 50.67 and 31.99 is: 47.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    33.97 : 50.67 = 31.99 : x
  2. Step 2: Convert to fraction form
    33.97/50.67 = 31.99/x
  3. Step 3: Cross multiply
    33.97x = 50.67 × 31.99
  4. Step 4: Simplify right side
    33.97x = 1,620.93
  5. Step 5: Solve for x
    x = 1,620.93/33.97
  6. Step 6: Final answer
    x = 47.72

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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.