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Finding the Fourth Proportional to 203.83, 281.20 and 160.30

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Solution

The fourth proportional to 203.83, 281.20 and 160.30 is: 221.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.83 : 281.20 = 160.30 : x
  2. Step 2: Convert to fraction form
    203.83/281.20 = 160.30/x
  3. Step 3: Cross multiply
    203.83x = 281.20 × 160.30
  4. Step 4: Simplify right side
    203.83x = 45,076.36
  5. Step 5: Solve for x
    x = 45,076.36/203.83
  6. Step 6: Final answer
    x = 221.15

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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.