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Finding the Fourth Proportional to 969.83, 1,338.38 and 550.19

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Solution

The fourth proportional to 969.83, 1,338.38 and 550.19 is: 759.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    969.83 : 1,338.38 = 550.19 : x
  2. Step 2: Convert to fraction form
    969.83/1,338.38 = 550.19/x
  3. Step 3: Cross multiply
    969.83x = 1,338.38 × 550.19
  4. Step 4: Simplify right side
    969.83x = 736,363.89
  5. Step 5: Solve for x
    x = 736,363.89/969.83
  6. Step 6: Final answer
    x = 759.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.