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Finding the Fourth Proportional to 260.74, 359.49 and 213.94

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Solution

The fourth proportional to 260.74, 359.49 and 213.94 is: 294.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.74 : 359.49 = 213.94 : x
  2. Step 2: Convert to fraction form
    260.74/359.49 = 213.94/x
  3. Step 3: Cross multiply
    260.74x = 359.49 × 213.94
  4. Step 4: Simplify right side
    260.74x = 76,909.29
  5. Step 5: Solve for x
    x = 76,909.29/260.74
  6. Step 6: Final answer
    x = 294.97

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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.