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Finding the Fourth Proportional to 481.13, 663.97 and 260.09

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Solution

The fourth proportional to 481.13, 663.97 and 260.09 is: 358.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.13 : 663.97 = 260.09 : x
  2. Step 2: Convert to fraction form
    481.13/663.97 = 260.09/x
  3. Step 3: Cross multiply
    481.13x = 663.97 × 260.09
  4. Step 4: Simplify right side
    481.13x = 172,690.96
  5. Step 5: Solve for x
    x = 172,690.96/481.13
  6. Step 6: Final answer
    x = 358.93

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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.