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Finding the Fourth Proportional to 33.57, 50.27 and 20

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Solution

The fourth proportional to 33.57, 50.27 and 20 is: 29.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    33.57 : 50.27 = 20 : x
  2. Step 2: Convert to fraction form
    33.57/50.27 = 20/x
  3. Step 3: Cross multiply
    33.57x = 50.27 × 20
  4. Step 4: Simplify right side
    33.57x = 1,005.40
  5. Step 5: Solve for x
    x = 1,005.40/33.57
  6. Step 6: Final answer
    x = 29.95

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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.