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Finding the Fourth Proportional to 203.95, 305.88 and 199.03

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Solution

The fourth proportional to 203.95, 305.88 and 199.03 is: 298.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.95 : 305.88 = 199.03 : x
  2. Step 2: Convert to fraction form
    203.95/305.88 = 199.03/x
  3. Step 3: Cross multiply
    203.95x = 305.88 × 199.03
  4. Step 4: Simplify right side
    203.95x = 60,879.30
  5. Step 5: Solve for x
    x = 60,879.30/203.95
  6. Step 6: Final answer
    x = 298.50

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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.