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Finding the Fourth Proportional to 28.54, 39.36 and 23.94

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Solution

The fourth proportional to 28.54, 39.36 and 23.94 is: 33.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28.54 : 39.36 = 23.94 : x
  2. Step 2: Convert to fraction form
    28.54/39.36 = 23.94/x
  3. Step 3: Cross multiply
    28.54x = 39.36 × 23.94
  4. Step 4: Simplify right side
    28.54x = 942.28
  5. Step 5: Solve for x
    x = 942.28/28.54
  6. Step 6: Final answer
    x = 33.02

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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.