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Finding the Fourth Proportional to 461.31, 692.11 and 187.56

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Solution

The fourth proportional to 461.31, 692.11 and 187.56 is: 281.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.31 : 692.11 = 187.56 : x
  2. Step 2: Convert to fraction form
    461.31/692.11 = 187.56/x
  3. Step 3: Cross multiply
    461.31x = 692.11 × 187.56
  4. Step 4: Simplify right side
    461.31x = 129,812.39
  5. Step 5: Solve for x
    x = 129,812.39/461.31
  6. Step 6: Final answer
    x = 281.40

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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.