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Finding the Fourth Proportional to 276.45, 413.09 and 199.05

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Solution

The fourth proportional to 276.45, 413.09 and 199.05 is: 297.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.45 : 413.09 = 199.05 : x
  2. Step 2: Convert to fraction form
    276.45/413.09 = 199.05/x
  3. Step 3: Cross multiply
    276.45x = 413.09 × 199.05
  4. Step 4: Simplify right side
    276.45x = 82,226.06
  5. Step 5: Solve for x
    x = 82,226.06/276.45
  6. Step 6: Final answer
    x = 297.44

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.