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Finding the Fourth Proportional to 609.21, 908.46 and 575.87

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Solution

The fourth proportional to 609.21, 908.46 and 575.87 is: 858.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.21 : 908.46 = 575.87 : x
  2. Step 2: Convert to fraction form
    609.21/908.46 = 575.87/x
  3. Step 3: Cross multiply
    609.21x = 908.46 × 575.87
  4. Step 4: Simplify right side
    609.21x = 523,150.32
  5. Step 5: Solve for x
    x = 523,150.32/609.21
  6. Step 6: Final answer
    x = 858.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.