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Finding the Fourth Proportional to 1,163.97, 1,745.55 and 342.27

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Solution

The fourth proportional to 1,163.97, 1,745.55 and 342.27 is: 513.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,163.97 : 1,745.55 = 342.27 : x
  2. Step 2: Convert to fraction form
    1,163.97/1,745.55 = 342.27/x
  3. Step 3: Cross multiply
    1,163.97x = 1,745.55 × 342.27
  4. Step 4: Simplify right side
    1,163.97x = 597,449.40
  5. Step 5: Solve for x
    x = 597,449.40/1,163.97
  6. Step 6: Final answer
    x = 513.29

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1.5x scale

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.