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Finding the Fourth Proportional to 599.57, 899.95 and 426.43

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Solution

The fourth proportional to 599.57, 899.95 and 426.43 is: 640.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    599.57 : 899.95 = 426.43 : x
  2. Step 2: Convert to fraction form
    599.57/899.95 = 426.43/x
  3. Step 3: Cross multiply
    599.57x = 899.95 × 426.43
  4. Step 4: Simplify right side
    599.57x = 383,765.68
  5. Step 5: Solve for x
    x = 383,765.68/599.57
  6. Step 6: Final answer
    x = 640.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.