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Finding the Fourth Proportional to 49.75, 68.61 and 33.38

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Solution

The fourth proportional to 49.75, 68.61 and 33.38 is: 46.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    49.75 : 68.61 = 33.38 : x
  2. Step 2: Convert to fraction form
    49.75/68.61 = 33.38/x
  3. Step 3: Cross multiply
    49.75x = 68.61 × 33.38
  4. Step 4: Simplify right side
    49.75x = 2,290.24
  5. Step 5: Solve for x
    x = 2,290.24/49.75
  6. Step 6: Final answer
    x = 46.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.