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Finding the Fourth Proportional to 300.09, 413.06 and 276.20

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Solution

The fourth proportional to 300.09, 413.06 and 276.20 is: 380.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.09 : 413.06 = 276.20 : x
  2. Step 2: Convert to fraction form
    300.09/413.06 = 276.20/x
  3. Step 3: Cross multiply
    300.09x = 413.06 × 276.20
  4. Step 4: Simplify right side
    300.09x = 114,083.73
  5. Step 5: Solve for x
    x = 114,083.73/300.09
  6. Step 6: Final answer
    x = 380.17

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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.