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Finding the Fourth Proportional to 1,163.28, 1,745.64 and 514.02

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Solution

The fourth proportional to 1,163.28, 1,745.64 and 514.02 is: 771.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,163.28 : 1,745.64 = 514.02 : x
  2. Step 2: Convert to fraction form
    1,163.28/1,745.64 = 514.02/x
  3. Step 3: Cross multiply
    1,163.28x = 1,745.64 × 514.02
  4. Step 4: Simplify right side
    1,163.28x = 897,293.87
  5. Step 5: Solve for x
    x = 897,293.87/1,163.28
  6. Step 6: Final answer
    x = 771.35

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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.