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Finding the Fourth Proportional to 692.09, 951.81 and 550.54

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Solution

The fourth proportional to 692.09, 951.81 and 550.54 is: 757.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.09 : 951.81 = 550.54 : x
  2. Step 2: Convert to fraction form
    692.09/951.81 = 550.54/x
  3. Step 3: Cross multiply
    692.09x = 951.81 × 550.54
  4. Step 4: Simplify right side
    692.09x = 524,009.48
  5. Step 5: Solve for x
    x = 524,009.48/692.09
  6. Step 6: Final answer
    x = 757.14

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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.