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Finding the Fourth Proportional to 481.94, 665.17 and 304.88

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Solution

The fourth proportional to 481.94, 665.17 and 304.88 is: 420.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.94 : 665.17 = 304.88 : x
  2. Step 2: Convert to fraction form
    481.94/665.17 = 304.88/x
  3. Step 3: Cross multiply
    481.94x = 665.17 × 304.88
  4. Step 4: Simplify right side
    481.94x = 202,797.03
  5. Step 5: Solve for x
    x = 202,797.03/481.94
  6. Step 6: Final answer
    x = 420.79

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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.