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Finding the Fourth Proportional to 481.21, 664.08 and 260.17

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Solution

The fourth proportional to 481.21, 664.08 and 260.17 is: 359.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.21 : 664.08 = 260.17 : x
  2. Step 2: Convert to fraction form
    481.21/664.08 = 260.17/x
  3. Step 3: Cross multiply
    481.21x = 664.08 × 260.17
  4. Step 4: Simplify right side
    481.21x = 172,769.57
  5. Step 5: Solve for x
    x = 172,769.57/481.21
  6. Step 6: Final answer
    x = 359.03

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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.