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Finding the Fourth Proportional to 1,163.38, 1,745.07 and 297.70

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Solution

The fourth proportional to 1,163.38, 1,745.07 and 297.70 is: 446.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,163.38 : 1,745.07 = 297.70 : x
  2. Step 2: Convert to fraction form
    1,163.38/1,745.07 = 297.70/x
  3. Step 3: Cross multiply
    1,163.38x = 1,745.07 × 297.70
  4. Step 4: Simplify right side
    1,163.38x = 519,497.13
  5. Step 5: Solve for x
    x = 519,497.13/1,163.38
  6. Step 6: Final answer
    x = 446.54

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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.