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Finding the Fourth Proportional to 200.25, 300.11 and 108.99

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Solution

The fourth proportional to 200.25, 300.11 and 108.99 is: 163.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.25 : 300.11 = 108.99 : x
  2. Step 2: Convert to fraction form
    200.25/300.11 = 108.99/x
  3. Step 3: Cross multiply
    200.25x = 300.11 × 108.99
  4. Step 4: Simplify right side
    200.25x = 32,708.44
  5. Step 5: Solve for x
    x = 32,708.44/200.25
  6. Step 6: Final answer
    x = 163.34

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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.