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Finding the Fourth Proportional to 589.87, 813.99 and 327.90

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Solution

The fourth proportional to 589.87, 813.99 and 327.90 is: 452.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.87 : 813.99 = 327.90 : x
  2. Step 2: Convert to fraction form
    589.87/813.99 = 327.90/x
  3. Step 3: Cross multiply
    589.87x = 813.99 × 327.90
  4. Step 4: Simplify right side
    589.87x = 266,907.32
  5. Step 5: Solve for x
    x = 266,907.32/589.87
  6. Step 6: Final answer
    x = 452.48

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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.