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Finding the Fourth Proportional to 460.90, 636.08 and 330.22

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Solution

The fourth proportional to 460.90, 636.08 and 330.22 is: 455.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.90 : 636.08 = 330.22 : x
  2. Step 2: Convert to fraction form
    460.90/636.08 = 330.22/x
  3. Step 3: Cross multiply
    460.90x = 636.08 × 330.22
  4. Step 4: Simplify right side
    460.90x = 210,046.34
  5. Step 5: Solve for x
    x = 210,046.34/460.90
  6. Step 6: Final answer
    x = 455.73

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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.