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Finding the Fourth Proportional to 630.43, 944.96 and 321.84

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Solution

The fourth proportional to 630.43, 944.96 and 321.84 is: 482.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.43 : 944.96 = 321.84 : x
  2. Step 2: Convert to fraction form
    630.43/944.96 = 321.84/x
  3. Step 3: Cross multiply
    630.43x = 944.96 × 321.84
  4. Step 4: Simplify right side
    630.43x = 304,124.32
  5. Step 5: Solve for x
    x = 304,124.32/630.43
  6. Step 6: Final answer
    x = 482.41

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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.