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Finding the Fourth Proportional to 260.85, 359.87 and 240.13

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Solution

The fourth proportional to 260.85, 359.87 and 240.13 is: 331.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.85 : 359.87 = 240.13 : x
  2. Step 2: Convert to fraction form
    260.85/359.87 = 240.13/x
  3. Step 3: Cross multiply
    260.85x = 359.87 × 240.13
  4. Step 4: Simplify right side
    260.85x = 86,415.58
  5. Step 5: Solve for x
    x = 86,415.58/260.85
  6. Step 6: Final answer
    x = 331.28

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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.