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Finding the Fourth Proportional to 1,209.26, 1,813.67 and 550.98

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Solution

The fourth proportional to 1,209.26, 1,813.67 and 550.98 is: 826.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209.26 : 1,813.67 = 550.98 : x
  2. Step 2: Convert to fraction form
    1,209.26/1,813.67 = 550.98/x
  3. Step 3: Cross multiply
    1,209.26x = 1,813.67 × 550.98
  4. Step 4: Simplify right side
    1,209.26x = 999,297.68
  5. Step 5: Solve for x
    x = 999,297.68/1,209.26
  6. Step 6: Final answer
    x = 826.37

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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.