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Finding the Fourth Proportional to 331.50, 493.96 and 295.15

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Solution

The fourth proportional to 331.50, 493.96 and 295.15 is: 439.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.50 : 493.96 = 295.15 : x
  2. Step 2: Convert to fraction form
    331.50/493.96 = 295.15/x
  3. Step 3: Cross multiply
    331.50x = 493.96 × 295.15
  4. Step 4: Simplify right side
    331.50x = 145,790.82
  5. Step 5: Solve for x
    x = 145,790.82/331.50
  6. Step 6: Final answer
    x = 439.79

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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.