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Finding the Fourth Proportional to 461.43, 636.75 and 274.95

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Solution

The fourth proportional to 461.43, 636.75 and 274.95 is: 379.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.43 : 636.75 = 274.95 : x
  2. Step 2: Convert to fraction form
    461.43/636.75 = 274.95/x
  3. Step 3: Cross multiply
    461.43x = 636.75 × 274.95
  4. Step 4: Simplify right side
    461.43x = 175,074.41
  5. Step 5: Solve for x
    x = 175,074.41/461.43
  6. Step 6: Final answer
    x = 379.42

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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.