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Finding the Fourth Proportional to 248.17, 342.90 and 239.41

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Solution

The fourth proportional to 248.17, 342.90 and 239.41 is: 330.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.17 : 342.90 = 239.41 : x
  2. Step 2: Convert to fraction form
    248.17/342.90 = 239.41/x
  3. Step 3: Cross multiply
    248.17x = 342.90 × 239.41
  4. Step 4: Simplify right side
    248.17x = 82,093.69
  5. Step 5: Solve for x
    x = 82,093.69/248.17
  6. Step 6: Final answer
    x = 330.80

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.