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Finding the Fourth Proportional to 611.03, 843.15 and 349.04

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Solution

The fourth proportional to 611.03, 843.15 and 349.04 is: 481.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.03 : 843.15 = 349.04 : x
  2. Step 2: Convert to fraction form
    611.03/843.15 = 349.04/x
  3. Step 3: Cross multiply
    611.03x = 843.15 × 349.04
  4. Step 4: Simplify right side
    611.03x = 294,288.86
  5. Step 5: Solve for x
    x = 294,288.86/611.03
  6. Step 6: Final answer
    x = 481.63

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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.