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Finding the Fourth Proportional to 323.40, 482.12 and 308.82

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Solution

The fourth proportional to 323.40, 482.12 and 308.82 is: 460.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.40 : 482.12 = 308.82 : x
  2. Step 2: Convert to fraction form
    323.40/482.12 = 308.82/x
  3. Step 3: Cross multiply
    323.40x = 482.12 × 308.82
  4. Step 4: Simplify right side
    323.40x = 148,889.07
  5. Step 5: Solve for x
    x = 148,889.07/323.40
  6. Step 6: Final answer
    x = 460.39

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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.