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Finding the Fourth Proportional to 679, 936.32 and 443

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Solution

The fourth proportional to 679, 936.32 and 443 is: 610.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    679 : 936.32 = 443 : x
  2. Step 2: Convert to fraction form
    679/936.32 = 443/x
  3. Step 3: Cross multiply
    679x = 936.32 × 443
  4. Step 4: Simplify right side
    679x = 414,789.76
  5. Step 5: Solve for x
    x = 414,789.76/679
  6. Step 6: Final answer
    x = 610.88

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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.