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Finding the Fourth Proportional to 323.45, 483.32 and 219.87

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Solution

The fourth proportional to 323.45, 483.32 and 219.87 is: 328.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.45 : 483.32 = 219.87 : x
  2. Step 2: Convert to fraction form
    323.45/483.32 = 219.87/x
  3. Step 3: Cross multiply
    323.45x = 483.32 × 219.87
  4. Step 4: Simplify right side
    323.45x = 106,266.47
  5. Step 5: Solve for x
    x = 106,266.47/323.45
  6. Step 6: Final answer
    x = 328.55

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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.