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Finding the Fourth Proportional to 1,163.26, 1,745.44 and 513.90

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Solution

The fourth proportional to 1,163.26, 1,745.44 and 513.90 is: 771.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,163.26 : 1,745.44 = 513.90 : x
  2. Step 2: Convert to fraction form
    1,163.26/1,745.44 = 513.90/x
  3. Step 3: Cross multiply
    1,163.26x = 1,745.44 × 513.90
  4. Step 4: Simplify right side
    1,163.26x = 896,981.62
  5. Step 5: Solve for x
    x = 896,981.62/1,163.26
  6. Step 6: Final answer
    x = 771.09

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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.