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Finding the Fourth Proportional to 460.88, 636.20 and 286.46

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Solution

The fourth proportional to 460.88, 636.20 and 286.46 is: 395.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.88 : 636.20 = 286.46 : x
  2. Step 2: Convert to fraction form
    460.88/636.20 = 286.46/x
  3. Step 3: Cross multiply
    460.88x = 636.20 × 286.46
  4. Step 4: Simplify right side
    460.88x = 182,245.85
  5. Step 5: Solve for x
    x = 182,245.85/460.88
  6. Step 6: Final answer
    x = 395.43

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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.