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Finding the Fourth Proportional to 276.10, 413.99 and 113.64

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Solution

The fourth proportional to 276.10, 413.99 and 113.64 is: 170.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.10 : 413.99 = 113.64 : x
  2. Step 2: Convert to fraction form
    276.10/413.99 = 113.64/x
  3. Step 3: Cross multiply
    276.10x = 413.99 × 113.64
  4. Step 4: Simplify right side
    276.10x = 47,045.82
  5. Step 5: Solve for x
    x = 47,045.82/276.10
  6. Step 6: Final answer
    x = 170.39

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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.