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Finding the Fourth Proportional to 323.98, 486.26 and 322.76

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Solution

The fourth proportional to 323.98, 486.26 and 322.76 is: 484.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.98 : 486.26 = 322.76 : x
  2. Step 2: Convert to fraction form
    323.98/486.26 = 322.76/x
  3. Step 3: Cross multiply
    323.98x = 486.26 × 322.76
  4. Step 4: Simplify right side
    323.98x = 156,945.28
  5. Step 5: Solve for x
    x = 156,945.28/323.98
  6. Step 6: Final answer
    x = 484.43

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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.