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Finding the Fourth Proportional to 260.98, 359.68 and 211.98

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Solution

The fourth proportional to 260.98, 359.68 and 211.98 is: 292.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.98 : 359.68 = 211.98 : x
  2. Step 2: Convert to fraction form
    260.98/359.68 = 211.98/x
  3. Step 3: Cross multiply
    260.98x = 359.68 × 211.98
  4. Step 4: Simplify right side
    260.98x = 76,244.97
  5. Step 5: Solve for x
    x = 76,244.97/260.98
  6. Step 6: Final answer
    x = 292.15

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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.