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Finding the Fourth Proportional to 550.83, 824.60 and 406.65

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Solution

The fourth proportional to 550.83, 824.60 and 406.65 is: 608.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.83 : 824.60 = 406.65 : x
  2. Step 2: Convert to fraction form
    550.83/824.60 = 406.65/x
  3. Step 3: Cross multiply
    550.83x = 824.60 × 406.65
  4. Step 4: Simplify right side
    550.83x = 335,323.59
  5. Step 5: Solve for x
    x = 335,323.59/550.83
  6. Step 6: Final answer
    x = 608.76

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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.