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Finding the Fourth Proportional to 260.84, 359.22 and 255.17

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Solution

The fourth proportional to 260.84, 359.22 and 255.17 is: 351.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.84 : 359.22 = 255.17 : x
  2. Step 2: Convert to fraction form
    260.84/359.22 = 255.17/x
  3. Step 3: Cross multiply
    260.84x = 359.22 × 255.17
  4. Step 4: Simplify right side
    260.84x = 91,659.10
  5. Step 5: Solve for x
    x = 91,659.10/260.84
  6. Step 6: Final answer
    x = 351.41

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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.