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Finding the Fourth Proportional to 481.42, 664.36 and 260.37

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Solution

The fourth proportional to 481.42, 664.36 and 260.37 is: 359.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.42 : 664.36 = 260.37 : x
  2. Step 2: Convert to fraction form
    481.42/664.36 = 260.37/x
  3. Step 3: Cross multiply
    481.42x = 664.36 × 260.37
  4. Step 4: Simplify right side
    481.42x = 172,978.11
  5. Step 5: Solve for x
    x = 172,978.11/481.42
  6. Step 6: Final answer
    x = 359.31

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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.