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Finding the Fourth Proportional to 260.91, 359.96 and 255.51

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Solution

The fourth proportional to 260.91, 359.96 and 255.51 is: 352.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.91 : 359.96 = 255.51 : x
  2. Step 2: Convert to fraction form
    260.91/359.96 = 255.51/x
  3. Step 3: Cross multiply
    260.91x = 359.96 × 255.51
  4. Step 4: Simplify right side
    260.91x = 91,972.10
  5. Step 5: Solve for x
    x = 91,972.10/260.91
  6. Step 6: Final answer
    x = 352.51

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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.