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Finding the Fourth Proportional to 258.12, 352.89 and 248.04

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Solution

The fourth proportional to 258.12, 352.89 and 248.04 is: 339.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    258.12 : 352.89 = 248.04 : x
  2. Step 2: Convert to fraction form
    258.12/352.89 = 248.04/x
  3. Step 3: Cross multiply
    258.12x = 352.89 × 248.04
  4. Step 4: Simplify right side
    258.12x = 87,530.84
  5. Step 5: Solve for x
    x = 87,530.84/258.12
  6. Step 6: Final answer
    x = 339.11

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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.