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Finding the Fourth Proportional to 338.80, 504.64 and 323

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Solution

The fourth proportional to 338.80, 504.64 and 323 is: 481.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.80 : 504.64 = 323 : x
  2. Step 2: Convert to fraction form
    338.80/504.64 = 323/x
  3. Step 3: Cross multiply
    338.80x = 504.64 × 323
  4. Step 4: Simplify right side
    338.80x = 162,998.72
  5. Step 5: Solve for x
    x = 162,998.72/338.80
  6. Step 6: Final answer
    x = 481.11

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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.