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Finding the Fourth Proportional to 589.98, 814.14 and 324.40

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Solution

The fourth proportional to 589.98, 814.14 and 324.40 is: 447.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.98 : 814.14 = 324.40 : x
  2. Step 2: Convert to fraction form
    589.98/814.14 = 324.40/x
  3. Step 3: Cross multiply
    589.98x = 814.14 × 324.40
  4. Step 4: Simplify right side
    589.98x = 264,107.02
  5. Step 5: Solve for x
    x = 264,107.02/589.98
  6. Step 6: Final answer
    x = 447.65

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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.