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Finding the Fourth Proportional to 1,163.61, 1,745.46 and 297.92

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Solution

The fourth proportional to 1,163.61, 1,745.46 and 297.92 is: 446.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,163.61 : 1,745.46 = 297.92 : x
  2. Step 2: Convert to fraction form
    1,163.61/1,745.46 = 297.92/x
  3. Step 3: Cross multiply
    1,163.61x = 1,745.46 × 297.92
  4. Step 4: Simplify right side
    1,163.61x = 520,011.81
  5. Step 5: Solve for x
    x = 520,011.81/1,163.61
  6. Step 6: Final answer
    x = 446.90

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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.