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Finding the Fourth Proportional to 611.98, 844.60 and 375.92

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Solution

The fourth proportional to 611.98, 844.60 and 375.92 is: 518.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.98 : 844.60 = 375.92 : x
  2. Step 2: Convert to fraction form
    611.98/844.60 = 375.92/x
  3. Step 3: Cross multiply
    611.98x = 844.60 × 375.92
  4. Step 4: Simplify right side
    611.98x = 317,502.03
  5. Step 5: Solve for x
    x = 317,502.03/611.98
  6. Step 6: Final answer
    x = 518.81

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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.