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Finding the Fourth Proportional to 348.49, 480.85 and 217.42

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Solution

The fourth proportional to 348.49, 480.85 and 217.42 is: 300.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.49 : 480.85 = 217.42 : x
  2. Step 2: Convert to fraction form
    348.49/480.85 = 217.42/x
  3. Step 3: Cross multiply
    348.49x = 480.85 × 217.42
  4. Step 4: Simplify right side
    348.49x = 104,546.41
  5. Step 5: Solve for x
    x = 104,546.41/348.49
  6. Step 6: Final answer
    x = 300.00

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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.