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Finding the Fourth Proportional to 961.08, 1,441.86 and 550.68

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Solution

The fourth proportional to 961.08, 1,441.86 and 550.68 is: 826.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    961.08 : 1,441.86 = 550.68 : x
  2. Step 2: Convert to fraction form
    961.08/1,441.86 = 550.68/x
  3. Step 3: Cross multiply
    961.08x = 1,441.86 × 550.68
  4. Step 4: Simplify right side
    961.08x = 794,003.46
  5. Step 5: Solve for x
    x = 794,003.46/961.08
  6. Step 6: Final answer
    x = 826.16

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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.