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Finding the Fourth Proportional to 260.70, 359.40 and 162.39

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Solution

The fourth proportional to 260.70, 359.40 and 162.39 is: 223.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.70 : 359.40 = 162.39 : x
  2. Step 2: Convert to fraction form
    260.70/359.40 = 162.39/x
  3. Step 3: Cross multiply
    260.70x = 359.40 × 162.39
  4. Step 4: Simplify right side
    260.70x = 58,362.97
  5. Step 5: Solve for x
    x = 58,362.97/260.70
  6. Step 6: Final answer
    x = 223.87

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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.