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Finding the Fourth Proportional to 199.94, 276.05 and 163.19

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Solution

The fourth proportional to 199.94, 276.05 and 163.19 is: 225.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    199.94 : 276.05 = 163.19 : x
  2. Step 2: Convert to fraction form
    199.94/276.05 = 163.19/x
  3. Step 3: Cross multiply
    199.94x = 276.05 × 163.19
  4. Step 4: Simplify right side
    199.94x = 45,046.40
  5. Step 5: Solve for x
    x = 45,046.40/199.94
  6. Step 6: Final answer
    x = 225.30

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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.