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Finding the Fourth Proportional to 274.44, 378.52 and 186.96

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Solution

The fourth proportional to 274.44, 378.52 and 186.96 is: 257.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.44 : 378.52 = 186.96 : x
  2. Step 2: Convert to fraction form
    274.44/378.52 = 186.96/x
  3. Step 3: Cross multiply
    274.44x = 378.52 × 186.96
  4. Step 4: Simplify right side
    274.44x = 70,768.10
  5. Step 5: Solve for x
    x = 70,768.10/274.44
  6. Step 6: Final answer
    x = 257.86

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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.