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Finding the Fourth Proportional to 611.01, 843.21 and 374.97

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Solution

The fourth proportional to 611.01, 843.21 and 374.97 is: 517.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.01 : 843.21 = 374.97 : x
  2. Step 2: Convert to fraction form
    611.01/843.21 = 374.97/x
  3. Step 3: Cross multiply
    611.01x = 843.21 × 374.97
  4. Step 4: Simplify right side
    611.01x = 316,178.45
  5. Step 5: Solve for x
    x = 316,178.45/611.01
  6. Step 6: Final answer
    x = 517.47

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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.