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Finding the Fourth Proportional to 1,163.09, 1,745.21 and 546.85

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Solution

The fourth proportional to 1,163.09, 1,745.21 and 546.85 is: 820.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,163.09 : 1,745.21 = 546.85 : x
  2. Step 2: Convert to fraction form
    1,163.09/1,745.21 = 546.85/x
  3. Step 3: Cross multiply
    1,163.09x = 1,745.21 × 546.85
  4. Step 4: Simplify right side
    1,163.09x = 954,368.09
  5. Step 5: Solve for x
    x = 954,368.09/1,163.09
  6. Step 6: Final answer
    x = 820.55

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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.