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Finding the Fourth Proportional to 28.73, 39.47 and 23.27

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Solution

The fourth proportional to 28.73, 39.47 and 23.27 is: 31.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28.73 : 39.47 = 23.27 : x
  2. Step 2: Convert to fraction form
    28.73/39.47 = 23.27/x
  3. Step 3: Cross multiply
    28.73x = 39.47 × 23.27
  4. Step 4: Simplify right side
    28.73x = 918.15
  5. Step 5: Solve for x
    x = 918.15/28.73
  6. Step 6: Final answer
    x = 31.96

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.