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Finding the Fourth Proportional to 300.66, 413.91 and 261.84

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Solution

The fourth proportional to 300.66, 413.91 and 261.84 is: 360.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.66 : 413.91 = 261.84 : x
  2. Step 2: Convert to fraction form
    300.66/413.91 = 261.84/x
  3. Step 3: Cross multiply
    300.66x = 413.91 × 261.84
  4. Step 4: Simplify right side
    300.66x = 108,378.19
  5. Step 5: Solve for x
    x = 108,378.19/300.66
  6. Step 6: Final answer
    x = 360.47

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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.