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Finding the Fourth Proportional to 246.95, 370.86 and 220.49

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Solution

The fourth proportional to 246.95, 370.86 and 220.49 is: 331.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.95 : 370.86 = 220.49 : x
  2. Step 2: Convert to fraction form
    246.95/370.86 = 220.49/x
  3. Step 3: Cross multiply
    246.95x = 370.86 × 220.49
  4. Step 4: Simplify right side
    246.95x = 81,770.92
  5. Step 5: Solve for x
    x = 81,770.92/246.95
  6. Step 6: Final answer
    x = 331.12

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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.