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Finding the Fourth Proportional to 348.12, 480.83 and 254.72

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Solution

The fourth proportional to 348.12, 480.83 and 254.72 is: 351.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.12 : 480.83 = 254.72 : x
  2. Step 2: Convert to fraction form
    348.12/480.83 = 254.72/x
  3. Step 3: Cross multiply
    348.12x = 480.83 × 254.72
  4. Step 4: Simplify right side
    348.12x = 122,477.02
  5. Step 5: Solve for x
    x = 122,477.02/348.12
  6. Step 6: Final answer
    x = 351.82

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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.