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Finding the Fourth Proportional to 199.98, 300.08 and 84.41

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Solution

The fourth proportional to 199.98, 300.08 and 84.41 is: 126.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    199.98 : 300.08 = 84.41 : x
  2. Step 2: Convert to fraction form
    199.98/300.08 = 84.41/x
  3. Step 3: Cross multiply
    199.98x = 300.08 × 84.41
  4. Step 4: Simplify right side
    199.98x = 25,329.59
  5. Step 5: Solve for x
    x = 25,329.59/199.98
  6. Step 6: Final answer
    x = 126.66

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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.