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Finding the Fourth Proportional to 692.24, 960.19 and 667.31

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Solution

The fourth proportional to 692.24, 960.19 and 667.31 is: 925.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.24 : 960.19 = 667.31 : x
  2. Step 2: Convert to fraction form
    692.24/960.19 = 667.31/x
  3. Step 3: Cross multiply
    692.24x = 960.19 × 667.31
  4. Step 4: Simplify right side
    692.24x = 640,738.06
  5. Step 5: Solve for x
    x = 640,738.06/692.24
  6. Step 6: Final answer
    x = 925.60

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.