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Finding the Fourth Proportional to 203.84, 281.28 and 165.12

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Solution

The fourth proportional to 203.84, 281.28 and 165.12 is: 227.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.84 : 281.28 = 165.12 : x
  2. Step 2: Convert to fraction form
    203.84/281.28 = 165.12/x
  3. Step 3: Cross multiply
    203.84x = 281.28 × 165.12
  4. Step 4: Simplify right side
    203.84x = 46,444.95
  5. Step 5: Solve for x
    x = 46,444.95/203.84
  6. Step 6: Final answer
    x = 227.85

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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.