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Finding the Fourth Proportional to 348.08, 519.61 and 323.78

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Solution

The fourth proportional to 348.08, 519.61 and 323.78 is: 483.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.08 : 519.61 = 323.78 : x
  2. Step 2: Convert to fraction form
    348.08/519.61 = 323.78/x
  3. Step 3: Cross multiply
    348.08x = 519.61 × 323.78
  4. Step 4: Simplify right side
    348.08x = 168,239.33
  5. Step 5: Solve for x
    x = 168,239.33/348.08
  6. Step 6: Final answer
    x = 483.34

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.