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Finding the Fourth Proportional to 481.82, 664.64 and 348.89

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Solution

The fourth proportional to 481.82, 664.64 and 348.89 is: 481.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.82 : 664.64 = 348.89 : x
  2. Step 2: Convert to fraction form
    481.82/664.64 = 348.89/x
  3. Step 3: Cross multiply
    481.82x = 664.64 × 348.89
  4. Step 4: Simplify right side
    481.82x = 231,890.50
  5. Step 5: Solve for x
    x = 231,890.50/481.82
  6. Step 6: Final answer
    x = 481.28

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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.