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Finding the Fourth Proportional to 27.84, 38.39 and 23.75

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Solution

The fourth proportional to 27.84, 38.39 and 23.75 is: 32.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    27.84 : 38.39 = 23.75 : x
  2. Step 2: Convert to fraction form
    27.84/38.39 = 23.75/x
  3. Step 3: Cross multiply
    27.84x = 38.39 × 23.75
  4. Step 4: Simplify right side
    27.84x = 911.76
  5. Step 5: Solve for x
    x = 911.76/27.84
  6. Step 6: Final answer
    x = 32.75

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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.