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Finding the Fourth Proportional to 461.55, 692.30 and 136.92

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Solution

The fourth proportional to 461.55, 692.30 and 136.92 is: 205.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.55 : 692.30 = 136.92 : x
  2. Step 2: Convert to fraction form
    461.55/692.30 = 136.92/x
  3. Step 3: Cross multiply
    461.55x = 692.30 × 136.92
  4. Step 4: Simplify right side
    461.55x = 94,789.03
  5. Step 5: Solve for x
    x = 94,789.03/461.55
  6. Step 6: Final answer
    x = 205.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.