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Finding the Fourth Proportional to 228.62, 343.24 and 136.25

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Solution

The fourth proportional to 228.62, 343.24 and 136.25 is: 204.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.62 : 343.24 = 136.25 : x
  2. Step 2: Convert to fraction form
    228.62/343.24 = 136.25/x
  3. Step 3: Cross multiply
    228.62x = 343.24 × 136.25
  4. Step 4: Simplify right side
    228.62x = 46,766.45
  5. Step 5: Solve for x
    x = 46,766.45/228.62
  6. Step 6: Final answer
    x = 204.56

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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.