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Finding the Fourth Proportional to 461.35, 636.67 and 251.54

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Solution

The fourth proportional to 461.35, 636.67 and 251.54 is: 347.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.35 : 636.67 = 251.54 : x
  2. Step 2: Convert to fraction form
    461.35/636.67 = 251.54/x
  3. Step 3: Cross multiply
    461.35x = 636.67 × 251.54
  4. Step 4: Simplify right side
    461.35x = 160,144.79
  5. Step 5: Solve for x
    x = 160,144.79/461.35
  6. Step 6: Final answer
    x = 347.13

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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.