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Finding the Fourth Proportional to 630.24, 945.37 and 321.22

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Solution

The fourth proportional to 630.24, 945.37 and 321.22 is: 481.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.24 : 945.37 = 321.22 : x
  2. Step 2: Convert to fraction form
    630.24/945.37 = 321.22/x
  3. Step 3: Cross multiply
    630.24x = 945.37 × 321.22
  4. Step 4: Simplify right side
    630.24x = 303,671.75
  5. Step 5: Solve for x
    x = 303,671.75/630.24
  6. Step 6: Final answer
    x = 481.84

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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.