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Finding the Fourth Proportional to 461.07, 636.19 and 274.52

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Solution

The fourth proportional to 461.07, 636.19 and 274.52 is: 378.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.07 : 636.19 = 274.52 : x
  2. Step 2: Convert to fraction form
    461.07/636.19 = 274.52/x
  3. Step 3: Cross multiply
    461.07x = 636.19 × 274.52
  4. Step 4: Simplify right side
    461.07x = 174,647.78
  5. Step 5: Solve for x
    x = 174,647.78/461.07
  6. Step 6: Final answer
    x = 378.79

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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.