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Finding the Fourth Proportional to 275.42, 413.28 and 113.06

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Solution

The fourth proportional to 275.42, 413.28 and 113.06 is: 169.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.42 : 413.28 = 113.06 : x
  2. Step 2: Convert to fraction form
    275.42/413.28 = 113.06/x
  3. Step 3: Cross multiply
    275.42x = 413.28 × 113.06
  4. Step 4: Simplify right side
    275.42x = 46,725.44
  5. Step 5: Solve for x
    x = 46,725.44/275.42
  6. Step 6: Final answer
    x = 169.65

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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.