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Finding the Fourth Proportional to 420.44, 578.24 and 337.41

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Solution

The fourth proportional to 420.44, 578.24 and 337.41 is: 464.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    420.44 : 578.24 = 337.41 : x
  2. Step 2: Convert to fraction form
    420.44/578.24 = 337.41/x
  3. Step 3: Cross multiply
    420.44x = 578.24 × 337.41
  4. Step 4: Simplify right side
    420.44x = 195,103.96
  5. Step 5: Solve for x
    x = 195,103.96/420.44
  6. Step 6: Final answer
    x = 464.05

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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.