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Finding the Fourth Proportional to 348.00, 480.24 and 198.64

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Solution

The fourth proportional to 348.00, 480.24 and 198.64 is: 274.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.00 : 480.24 = 198.64 : x
  2. Step 2: Convert to fraction form
    348.00/480.24 = 198.64/x
  3. Step 3: Cross multiply
    348.00x = 480.24 × 198.64
  4. Step 4: Simplify right side
    348.00x = 95,395.47
  5. Step 5: Solve for x
    x = 95,395.47/348.00
  6. Step 6: Final answer
    x = 274.13

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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.