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Finding the Fourth Proportional to 300.69, 414.81 and 201.11

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Solution

The fourth proportional to 300.69, 414.81 and 201.11 is: 277.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.69 : 414.81 = 201.11 : x
  2. Step 2: Convert to fraction form
    300.69/414.81 = 201.11/x
  3. Step 3: Cross multiply
    300.69x = 414.81 × 201.11
  4. Step 4: Simplify right side
    300.69x = 83,420.37
  5. Step 5: Solve for x
    x = 83,420.37/300.69
  6. Step 6: Final answer
    x = 277.43

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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.