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Finding the Fourth Proportional to 348.43, 480.72 and 248.76

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Solution

The fourth proportional to 348.43, 480.72 and 248.76 is: 343.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.43 : 480.72 = 248.76 : x
  2. Step 2: Convert to fraction form
    348.43/480.72 = 248.76/x
  3. Step 3: Cross multiply
    348.43x = 480.72 × 248.76
  4. Step 4: Simplify right side
    348.43x = 119,585.73
  5. Step 5: Solve for x
    x = 119,585.73/348.43
  6. Step 6: Final answer
    x = 343.21

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Why These Related Problems?

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