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Finding the Fourth Proportional to 330.46, 456.18 and 199.44

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Solution

The fourth proportional to 330.46, 456.18 and 199.44 is: 275.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.46 : 456.18 = 199.44 : x
  2. Step 2: Convert to fraction form
    330.46/456.18 = 199.44/x
  3. Step 3: Cross multiply
    330.46x = 456.18 × 199.44
  4. Step 4: Simplify right side
    330.46x = 90,980.54
  5. Step 5: Solve for x
    x = 90,980.54/330.46
  6. Step 6: Final answer
    x = 275.31

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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.