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Finding the Fourth Proportional to 2,236.44, 3,355.34 and 775.61

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Solution

The fourth proportional to 2,236.44, 3,355.34 and 775.61 is: 1,163.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,236.44 : 3,355.34 = 775.61 : x
  2. Step 2: Convert to fraction form
    2,236.44/3,355.34 = 775.61/x
  3. Step 3: Cross multiply
    2,236.44x = 3,355.34 × 775.61
  4. Step 4: Simplify right side
    2,236.44x = 2,602,414.60
  5. Step 5: Solve for x
    x = 2,602,414.60/2,236.44
  6. Step 6: Final answer
    x = 1,163.64

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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.