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Finding the Fourth Proportional to 299.95, 413.52 and 189.37

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Solution

The fourth proportional to 299.95, 413.52 and 189.37 is: 261.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.95 : 413.52 = 189.37 : x
  2. Step 2: Convert to fraction form
    299.95/413.52 = 189.37/x
  3. Step 3: Cross multiply
    299.95x = 413.52 × 189.37
  4. Step 4: Simplify right side
    299.95x = 78,308.28
  5. Step 5: Solve for x
    x = 78,308.28/299.95
  6. Step 6: Final answer
    x = 261.07

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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.