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Finding the Fourth Proportional to 28.04, 38.60 and 27.44

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Solution

The fourth proportional to 28.04, 38.60 and 27.44 is: 37.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28.04 : 38.60 = 27.44 : x
  2. Step 2: Convert to fraction form
    28.04/38.60 = 27.44/x
  3. Step 3: Cross multiply
    28.04x = 38.60 × 27.44
  4. Step 4: Simplify right side
    28.04x = 1,059.18
  5. Step 5: Solve for x
    x = 1,059.18/28.04
  6. Step 6: Final answer
    x = 37.77

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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.