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Finding the Fourth Proportional to 308.55, 425.85 and 184.20

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Solution

The fourth proportional to 308.55, 425.85 and 184.20 is: 254.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.55 : 425.85 = 184.20 : x
  2. Step 2: Convert to fraction form
    308.55/425.85 = 184.20/x
  3. Step 3: Cross multiply
    308.55x = 425.85 × 184.20
  4. Step 4: Simplify right side
    308.55x = 78,441.57
  5. Step 5: Solve for x
    x = 78,441.57/308.55
  6. Step 6: Final answer
    x = 254.23

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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.