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Finding the Fourth Proportional to 322.02, 483.39 and 321.30

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Solution

The fourth proportional to 322.02, 483.39 and 321.30 is: 482.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.02 : 483.39 = 321.30 : x
  2. Step 2: Convert to fraction form
    322.02/483.39 = 321.30/x
  3. Step 3: Cross multiply
    322.02x = 483.39 × 321.30
  4. Step 4: Simplify right side
    322.02x = 155,313.21
  5. Step 5: Solve for x
    x = 155,313.21/322.02
  6. Step 6: Final answer
    x = 482.31

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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.