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Finding the Fourth Proportional to 481, 664.32 and 325.48

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Solution

The fourth proportional to 481, 664.32 and 325.48 is: 449.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    481 : 664.32 = 325.48 : x
  2. Step 2: Convert to fraction form
    481/664.32 = 325.48/x
  3. Step 3: Cross multiply
    481x = 664.32 × 325.48
  4. Step 4: Simplify right side
    481x = 216,222.87
  5. Step 5: Solve for x
    x = 216,222.87/481
  6. Step 6: Final answer
    x = 449.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.