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Finding the Fourth Proportional to 203.77, 305.22 and 196.66

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Solution

The fourth proportional to 203.77, 305.22 and 196.66 is: 294.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.77 : 305.22 = 196.66 : x
  2. Step 2: Convert to fraction form
    203.77/305.22 = 196.66/x
  3. Step 3: Cross multiply
    203.77x = 305.22 × 196.66
  4. Step 4: Simplify right side
    203.77x = 60,024.58
  5. Step 5: Solve for x
    x = 60,024.58/203.77
  6. Step 6: Final answer
    x = 294.58

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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.