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Finding the Fourth Proportional to 461.59, 636.99 and 251.76

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Solution

The fourth proportional to 461.59, 636.99 and 251.76 is: 347.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.59 : 636.99 = 251.76 : x
  2. Step 2: Convert to fraction form
    461.59/636.99 = 251.76/x
  3. Step 3: Cross multiply
    461.59x = 636.99 × 251.76
  4. Step 4: Simplify right side
    461.59x = 160,368.60
  5. Step 5: Solve for x
    x = 160,368.60/461.59
  6. Step 6: Final answer
    x = 347.43

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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.