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Finding the Fourth Proportional to 199.94, 300.08 and 84.46

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Solution

The fourth proportional to 199.94, 300.08 and 84.46 is: 126.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    199.94 : 300.08 = 84.46 : x
  2. Step 2: Convert to fraction form
    199.94/300.08 = 84.46/x
  3. Step 3: Cross multiply
    199.94x = 300.08 × 84.46
  4. Step 4: Simplify right side
    199.94x = 25,344.76
  5. Step 5: Solve for x
    x = 25,344.76/199.94
  6. Step 6: Final answer
    x = 126.76

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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.