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Finding the Fourth Proportional to 281.36, 386.26 and 246.80

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Solution

The fourth proportional to 281.36, 386.26 and 246.80 is: 338.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    281.36 : 386.26 = 246.80 : x
  2. Step 2: Convert to fraction form
    281.36/386.26 = 246.80/x
  3. Step 3: Cross multiply
    281.36x = 386.26 × 246.80
  4. Step 4: Simplify right side
    281.36x = 95,328.97
  5. Step 5: Solve for x
    x = 95,328.97/281.36
  6. Step 6: Final answer
    x = 338.81

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.