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Finding the Fourth Proportional to 204.14, 305.98 and 112.68

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Solution

The fourth proportional to 204.14, 305.98 and 112.68 is: 168.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.14 : 305.98 = 112.68 : x
  2. Step 2: Convert to fraction form
    204.14/305.98 = 112.68/x
  3. Step 3: Cross multiply
    204.14x = 305.98 × 112.68
  4. Step 4: Simplify right side
    204.14x = 34,477.54
  5. Step 5: Solve for x
    x = 34,477.54/204.14
  6. Step 6: Final answer
    x = 168.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.