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Finding the Fourth Proportional to 461.66, 692.42 and 187.74

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Solution

The fourth proportional to 461.66, 692.42 and 187.74 is: 281.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.66 : 692.42 = 187.74 : x
  2. Step 2: Convert to fraction form
    461.66/692.42 = 187.74/x
  3. Step 3: Cross multiply
    461.66x = 692.42 × 187.74
  4. Step 4: Simplify right side
    461.66x = 129,993.99
  5. Step 5: Solve for x
    x = 129,993.99/461.66
  6. Step 6: Final answer
    x = 281.58

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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.