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Finding the Fourth Proportional to 300.09, 413.65 and 274.98

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Solution

The fourth proportional to 300.09, 413.65 and 274.98 is: 379.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.09 : 413.65 = 274.98 : x
  2. Step 2: Convert to fraction form
    300.09/413.65 = 274.98/x
  3. Step 3: Cross multiply
    300.09x = 413.65 × 274.98
  4. Step 4: Simplify right side
    300.09x = 113,745.48
  5. Step 5: Solve for x
    x = 113,745.48/300.09
  6. Step 6: Final answer
    x = 379.04

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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.