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Finding the Fourth Proportional to 611.01, 843.12 and 348.98

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Solution

The fourth proportional to 611.01, 843.12 and 348.98 is: 481.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.01 : 843.12 = 348.98 : x
  2. Step 2: Convert to fraction form
    611.01/843.12 = 348.98/x
  3. Step 3: Cross multiply
    611.01x = 843.12 × 348.98
  4. Step 4: Simplify right side
    611.01x = 294,227.80
  5. Step 5: Solve for x
    x = 294,227.80/611.01
  6. Step 6: Final answer
    x = 481.54

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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.