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Finding the Fourth Proportional to 325.24, 485 and 322.31

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Solution

The fourth proportional to 325.24, 485 and 322.31 is: 480.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.24 : 485 = 322.31 : x
  2. Step 2: Convert to fraction form
    325.24/485 = 322.31/x
  3. Step 3: Cross multiply
    325.24x = 485 × 322.31
  4. Step 4: Simplify right side
    325.24x = 156,320.35
  5. Step 5: Solve for x
    x = 156,320.35/325.24
  6. Step 6: Final answer
    x = 480.63

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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.