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Finding the Fourth Proportional to 300.16, 413.94 and 187.99

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Solution

The fourth proportional to 300.16, 413.94 and 187.99 is: 259.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.16 : 413.94 = 187.99 : x
  2. Step 2: Convert to fraction form
    300.16/413.94 = 187.99/x
  3. Step 3: Cross multiply
    300.16x = 413.94 × 187.99
  4. Step 4: Simplify right side
    300.16x = 77,816.58
  5. Step 5: Solve for x
    x = 77,816.58/300.16
  6. Step 6: Final answer
    x = 259.25

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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.