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Finding the Fourth Proportional to 204.23, 281.65 and 160.49

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Solution

The fourth proportional to 204.23, 281.65 and 160.49 is: 221.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.23 : 281.65 = 160.49 : x
  2. Step 2: Convert to fraction form
    204.23/281.65 = 160.49/x
  3. Step 3: Cross multiply
    204.23x = 281.65 × 160.49
  4. Step 4: Simplify right side
    204.23x = 45,201.03
  5. Step 5: Solve for x
    x = 45,201.03/204.23
  6. Step 6: Final answer
    x = 221.33

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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.