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Finding the Fourth Proportional to 33.62, 50.32 and 21.57

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Solution

The fourth proportional to 33.62, 50.32 and 21.57 is: 32.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    33.62 : 50.32 = 21.57 : x
  2. Step 2: Convert to fraction form
    33.62/50.32 = 21.57/x
  3. Step 3: Cross multiply
    33.62x = 50.32 × 21.57
  4. Step 4: Simplify right side
    33.62x = 1,085.24
  5. Step 5: Solve for x
    x = 1,085.24/33.62
  6. Step 6: Final answer
    x = 32.28

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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.