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Finding the Fourth Proportional to 276.08, 413.36 and 210.78

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Solution

The fourth proportional to 276.08, 413.36 and 210.78 is: 315.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.08 : 413.36 = 210.78 : x
  2. Step 2: Convert to fraction form
    276.08/413.36 = 210.78/x
  3. Step 3: Cross multiply
    276.08x = 413.36 × 210.78
  4. Step 4: Simplify right side
    276.08x = 87,128.02
  5. Step 5: Solve for x
    x = 87,128.02/276.08
  6. Step 6: Final answer
    x = 315.59

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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.