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Finding the Fourth Proportional to 325.11, 484.01 and 320.55

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Solution

The fourth proportional to 325.11, 484.01 and 320.55 is: 477.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.11 : 484.01 = 320.55 : x
  2. Step 2: Convert to fraction form
    325.11/484.01 = 320.55/x
  3. Step 3: Cross multiply
    325.11x = 484.01 × 320.55
  4. Step 4: Simplify right side
    325.11x = 155,147.80
  5. Step 5: Solve for x
    x = 155,147.80/325.11
  6. Step 6: Final answer
    x = 477.22

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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.