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Finding the Fourth Proportional to 204.30, 281.64 and 160.56

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Solution

The fourth proportional to 204.30, 281.64 and 160.56 is: 221.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.30 : 281.64 = 160.56 : x
  2. Step 2: Convert to fraction form
    204.30/281.64 = 160.56/x
  3. Step 3: Cross multiply
    204.30x = 281.64 × 160.56
  4. Step 4: Simplify right side
    204.30x = 45,220.12
  5. Step 5: Solve for x
    x = 45,220.12/204.30
  6. Step 6: Final answer
    x = 221.34

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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.