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Finding the Fourth Proportional to 258.33, 386.87 and 249.02

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Solution

The fourth proportional to 258.33, 386.87 and 249.02 is: 372.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    258.33 : 386.87 = 249.02 : x
  2. Step 2: Convert to fraction form
    258.33/386.87 = 249.02/x
  3. Step 3: Cross multiply
    258.33x = 386.87 × 249.02
  4. Step 4: Simplify right side
    258.33x = 96,335.19
  5. Step 5: Solve for x
    x = 96,335.19/258.33
  6. Step 6: Final answer
    x = 372.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.