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Finding the Fourth Proportional to 321.52, 482.24 and 200.48

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Solution

The fourth proportional to 321.52, 482.24 and 200.48 is: 300.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    321.52 : 482.24 = 200.48 : x
  2. Step 2: Convert to fraction form
    321.52/482.24 = 200.48/x
  3. Step 3: Cross multiply
    321.52x = 482.24 × 200.48
  4. Step 4: Simplify right side
    321.52x = 96,679.48
  5. Step 5: Solve for x
    x = 96,679.48/321.52
  6. Step 6: Final answer
    x = 300.70

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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.