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Finding the Fourth Proportional to 300.47, 413.81 and 259.01

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Solution

The fourth proportional to 300.47, 413.81 and 259.01 is: 356.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.47 : 413.81 = 259.01 : x
  2. Step 2: Convert to fraction form
    300.47/413.81 = 259.01/x
  3. Step 3: Cross multiply
    300.47x = 413.81 × 259.01
  4. Step 4: Simplify right side
    300.47x = 107,180.09
  5. Step 5: Solve for x
    x = 107,180.09/300.47
  6. Step 6: Final answer
    x = 356.71

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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.