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Finding the Fourth Proportional to 308.91, 426.18 and 184.55

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Solution

The fourth proportional to 308.91, 426.18 and 184.55 is: 254.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.91 : 426.18 = 184.55 : x
  2. Step 2: Convert to fraction form
    308.91/426.18 = 184.55/x
  3. Step 3: Cross multiply
    308.91x = 426.18 × 184.55
  4. Step 4: Simplify right side
    308.91x = 78,650.08
  5. Step 5: Solve for x
    x = 78,650.08/308.91
  6. Step 6: Final answer
    x = 254.61

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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.