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Finding the Fourth Proportional to 692.75, 956.19 and 412.89

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Solution

The fourth proportional to 692.75, 956.19 and 412.89 is: 569.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.75 : 956.19 = 412.89 : x
  2. Step 2: Convert to fraction form
    692.75/956.19 = 412.89/x
  3. Step 3: Cross multiply
    692.75x = 956.19 × 412.89
  4. Step 4: Simplify right side
    692.75x = 394,801.29
  5. Step 5: Solve for x
    x = 394,801.29/692.75
  6. Step 6: Final answer
    x = 569.91

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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.