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Finding the Fourth Proportional to 275.89, 413.68 and 113.39

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Solution

The fourth proportional to 275.89, 413.68 and 113.39 is: 170.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.89 : 413.68 = 113.39 : x
  2. Step 2: Convert to fraction form
    275.89/413.68 = 113.39/x
  3. Step 3: Cross multiply
    275.89x = 413.68 × 113.39
  4. Step 4: Simplify right side
    275.89x = 46,907.18
  5. Step 5: Solve for x
    x = 46,907.18/275.89
  6. Step 6: Final answer
    x = 170.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.