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Finding the Fourth Proportional to 248.28, 370.38 and 231

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Solution

The fourth proportional to 248.28, 370.38 and 231 is: 344.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.28 : 370.38 = 231 : x
  2. Step 2: Convert to fraction form
    248.28/370.38 = 231/x
  3. Step 3: Cross multiply
    248.28x = 370.38 × 231
  4. Step 4: Simplify right side
    248.28x = 85,557.78
  5. Step 5: Solve for x
    x = 85,557.78/248.28
  6. Step 6: Final answer
    x = 344.60

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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.