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Finding the Fourth Proportional to 249.22, 374.15 and 194.55

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Solution

The fourth proportional to 249.22, 374.15 and 194.55 is: 292.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.22 : 374.15 = 194.55 : x
  2. Step 2: Convert to fraction form
    249.22/374.15 = 194.55/x
  3. Step 3: Cross multiply
    249.22x = 374.15 × 194.55
  4. Step 4: Simplify right side
    249.22x = 72,790.88
  5. Step 5: Solve for x
    x = 72,790.88/249.22
  6. Step 6: Final answer
    x = 292.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.