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Finding the Fourth Proportional to 331.05, 494.52 and 262.35

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Solution

The fourth proportional to 331.05, 494.52 and 262.35 is: 391.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.05 : 494.52 = 262.35 : x
  2. Step 2: Convert to fraction form
    331.05/494.52 = 262.35/x
  3. Step 3: Cross multiply
    331.05x = 494.52 × 262.35
  4. Step 4: Simplify right side
    331.05x = 129,737.32
  5. Step 5: Solve for x
    x = 129,737.32/331.05
  6. Step 6: Final answer
    x = 391.90

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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.