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Finding the Fourth Proportional to 32.97, 45.53 and 20.71

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Solution

The fourth proportional to 32.97, 45.53 and 20.71 is: 28.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    32.97 : 45.53 = 20.71 : x
  2. Step 2: Convert to fraction form
    32.97/45.53 = 20.71/x
  3. Step 3: Cross multiply
    32.97x = 45.53 × 20.71
  4. Step 4: Simplify right side
    32.97x = 942.80
  5. Step 5: Solve for x
    x = 942.80/32.97
  6. Step 6: Final answer
    x = 28.59

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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.