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Finding the Fourth Proportional to 260.88, 359.60 and 208.26

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Solution

The fourth proportional to 260.88, 359.60 and 208.26 is: 287.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.88 : 359.60 = 208.26 : x
  2. Step 2: Convert to fraction form
    260.88/359.60 = 208.26/x
  3. Step 3: Cross multiply
    260.88x = 359.60 × 208.26
  4. Step 4: Simplify right side
    260.88x = 74,890.21
  5. Step 5: Solve for x
    x = 74,890.21/260.88
  6. Step 6: Final answer
    x = 287.06

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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.