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Finding the Fourth Proportional to 260.39, 359.29 and 202.61

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Solution

The fourth proportional to 260.39, 359.29 and 202.61 is: 279.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.39 : 359.29 = 202.61 : x
  2. Step 2: Convert to fraction form
    260.39/359.29 = 202.61/x
  3. Step 3: Cross multiply
    260.39x = 359.29 × 202.61
  4. Step 4: Simplify right side
    260.39x = 72,795.75
  5. Step 5: Solve for x
    x = 72,795.75/260.39
  6. Step 6: Final answer
    x = 279.56

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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.