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Finding the Fourth Proportional to 248.73, 371.21 and 228.07

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Solution

The fourth proportional to 248.73, 371.21 and 228.07 is: 340.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.73 : 371.21 = 228.07 : x
  2. Step 2: Convert to fraction form
    248.73/371.21 = 228.07/x
  3. Step 3: Cross multiply
    248.73x = 371.21 × 228.07
  4. Step 4: Simplify right side
    248.73x = 84,661.86
  5. Step 5: Solve for x
    x = 84,661.86/248.73
  6. Step 6: Final answer
    x = 340.38

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.