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Finding the Fourth Proportional to 461.25, 692.56 and 187.88

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Solution

The fourth proportional to 461.25, 692.56 and 187.88 is: 282.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.25 : 692.56 = 187.88 : x
  2. Step 2: Convert to fraction form
    461.25/692.56 = 187.88/x
  3. Step 3: Cross multiply
    461.25x = 692.56 × 187.88
  4. Step 4: Simplify right side
    461.25x = 130,115.18
  5. Step 5: Solve for x
    x = 130,115.18/461.25
  6. Step 6: Final answer
    x = 282.09

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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.