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Finding the Fourth Proportional to 461.25, 636.62 and 274.77

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Solution

The fourth proportional to 461.25, 636.62 and 274.77 is: 379.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.25 : 636.62 = 274.77 : x
  2. Step 2: Convert to fraction form
    461.25/636.62 = 274.77/x
  3. Step 3: Cross multiply
    461.25x = 636.62 × 274.77
  4. Step 4: Simplify right side
    461.25x = 174,922.70
  5. Step 5: Solve for x
    x = 174,922.70/461.25
  6. Step 6: Final answer
    x = 379.24

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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.