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Finding the Fourth Proportional to 602.59, 905.41 and 578.29

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Solution

The fourth proportional to 602.59, 905.41 and 578.29 is: 868.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.59 : 905.41 = 578.29 : x
  2. Step 2: Convert to fraction form
    602.59/905.41 = 578.29/x
  3. Step 3: Cross multiply
    602.59x = 905.41 × 578.29
  4. Step 4: Simplify right side
    602.59x = 523,589.55
  5. Step 5: Solve for x
    x = 523,589.55/602.59
  6. Step 6: Final answer
    x = 868.90

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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.