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Finding the Fourth Proportional to 204.26, 305.13 and 168.21

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Solution

The fourth proportional to 204.26, 305.13 and 168.21 is: 251.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.26 : 305.13 = 168.21 : x
  2. Step 2: Convert to fraction form
    204.26/305.13 = 168.21/x
  3. Step 3: Cross multiply
    204.26x = 305.13 × 168.21
  4. Step 4: Simplify right side
    204.26x = 51,326.55
  5. Step 5: Solve for x
    x = 51,326.55/204.26
  6. Step 6: Final answer
    x = 251.29

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.