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Finding the Fourth Proportional to 348.36, 480.16 and 255.10

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Solution

The fourth proportional to 348.36, 480.16 and 255.10 is: 351.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.36 : 480.16 = 255.10 : x
  2. Step 2: Convert to fraction form
    348.36/480.16 = 255.10/x
  3. Step 3: Cross multiply
    348.36x = 480.16 × 255.10
  4. Step 4: Simplify right side
    348.36x = 122,488.82
  5. Step 5: Solve for x
    x = 122,488.82/348.36
  6. Step 6: Final answer
    x = 351.62

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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.