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Finding the Fourth Proportional to 679.50, 937.31 and 443.07

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Solution

The fourth proportional to 679.50, 937.31 and 443.07 is: 611.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.50 : 937.31 = 443.07 : x
  2. Step 2: Convert to fraction form
    679.50/937.31 = 443.07/x
  3. Step 3: Cross multiply
    679.50x = 937.31 × 443.07
  4. Step 4: Simplify right side
    679.50x = 415,291.73
  5. Step 5: Solve for x
    x = 415,291.73/679.50
  6. Step 6: Final answer
    x = 611.17

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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.