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Finding the Fourth Proportional to 348.16, 480.48 and 198.83

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Solution

The fourth proportional to 348.16, 480.48 and 198.83 is: 274.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.16 : 480.48 = 198.83 : x
  2. Step 2: Convert to fraction form
    348.16/480.48 = 198.83/x
  3. Step 3: Cross multiply
    348.16x = 480.48 × 198.83
  4. Step 4: Simplify right side
    348.16x = 95,532.64
  5. Step 5: Solve for x
    x = 95,532.64/348.16
  6. Step 6: Final answer
    x = 274.39

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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.