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Finding the Fourth Proportional to 348.54, 480.90 and 201.21

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Solution

The fourth proportional to 348.54, 480.90 and 201.21 is: 277.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.54 : 480.90 = 201.21 : x
  2. Step 2: Convert to fraction form
    348.54/480.90 = 201.21/x
  3. Step 3: Cross multiply
    348.54x = 480.90 × 201.21
  4. Step 4: Simplify right side
    348.54x = 96,761.89
  5. Step 5: Solve for x
    x = 96,761.89/348.54
  6. Step 6: Final answer
    x = 277.62

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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.