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Finding the Fourth Proportional to 461.95, 636.34 and 321.82

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Solution

The fourth proportional to 461.95, 636.34 and 321.82 is: 443.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.95 : 636.34 = 321.82 : x
  2. Step 2: Convert to fraction form
    461.95/636.34 = 321.82/x
  3. Step 3: Cross multiply
    461.95x = 636.34 × 321.82
  4. Step 4: Simplify right side
    461.95x = 204,782.15
  5. Step 5: Solve for x
    x = 204,782.15/461.95
  6. Step 6: Final answer
    x = 443.30

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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.