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Finding the Fourth Proportional to 692.19, 955.20 and 412.29

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Solution

The fourth proportional to 692.19, 955.20 and 412.29 is: 568.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.19 : 955.20 = 412.29 : x
  2. Step 2: Convert to fraction form
    692.19/955.20 = 412.29/x
  3. Step 3: Cross multiply
    692.19x = 955.20 × 412.29
  4. Step 4: Simplify right side
    692.19x = 393,819.41
  5. Step 5: Solve for x
    x = 393,819.41/692.19
  6. Step 6: Final answer
    x = 568.95

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Double scale
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1.5x scale

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.