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Finding the Fourth Proportional to 276.37, 416.21 and 240.73

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Solution

The fourth proportional to 276.37, 416.21 and 240.73 is: 362.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.37 : 416.21 = 240.73 : x
  2. Step 2: Convert to fraction form
    276.37/416.21 = 240.73/x
  3. Step 3: Cross multiply
    276.37x = 416.21 × 240.73
  4. Step 4: Simplify right side
    276.37x = 100,194.97
  5. Step 5: Solve for x
    x = 100,194.97/276.37
  6. Step 6: Final answer
    x = 362.53

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.