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Finding the Fourth Proportional to 33.71, 50.43 and 28.58

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Solution

The fourth proportional to 33.71, 50.43 and 28.58 is: 42.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    33.71 : 50.43 = 28.58 : x
  2. Step 2: Convert to fraction form
    33.71/50.43 = 28.58/x
  3. Step 3: Cross multiply
    33.71x = 50.43 × 28.58
  4. Step 4: Simplify right side
    33.71x = 1,441.02
  5. Step 5: Solve for x
    x = 1,441.02/33.71
  6. Step 6: Final answer
    x = 42.75

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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.