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Finding the Fourth Proportional to 591.39, 814.50 and 443.79

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Solution

The fourth proportional to 591.39, 814.50 and 443.79 is: 611.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.39 : 814.50 = 443.79 : x
  2. Step 2: Convert to fraction form
    591.39/814.50 = 443.79/x
  3. Step 3: Cross multiply
    591.39x = 814.50 × 443.79
  4. Step 4: Simplify right side
    591.39x = 361,466.96
  5. Step 5: Solve for x
    x = 361,466.96/591.39
  6. Step 6: Final answer
    x = 611.22

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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.