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Finding the Fourth Proportional to 1,441.43, 2,161.91 and 516.83

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Solution

The fourth proportional to 1,441.43, 2,161.91 and 516.83 is: 775.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,441.43 : 2,161.91 = 516.83 : x
  2. Step 2: Convert to fraction form
    1,441.43/2,161.91 = 516.83/x
  3. Step 3: Cross multiply
    1,441.43x = 2,161.91 × 516.83
  4. Step 4: Simplify right side
    1,441.43x = 1,117,326.55
  5. Step 5: Solve for x
    x = 1,117,326.55/1,441.43
  6. Step 6: Final answer
    x = 775.15

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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.