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Finding the Fourth Proportional to 274.39, 378.57 and 181.14

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Solution

The fourth proportional to 274.39, 378.57 and 181.14 is: 249.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.39 : 378.57 = 181.14 : x
  2. Step 2: Convert to fraction form
    274.39/378.57 = 181.14/x
  3. Step 3: Cross multiply
    274.39x = 378.57 × 181.14
  4. Step 4: Simplify right side
    274.39x = 68,573.43
  5. Step 5: Solve for x
    x = 68,573.43/274.39
  6. Step 6: Final answer
    x = 249.91

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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.