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Finding the Fourth Proportional to 481.55, 722.32 and 320.36

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Solution

The fourth proportional to 481.55, 722.32 and 320.36 is: 480.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.55 : 722.32 = 320.36 : x
  2. Step 2: Convert to fraction form
    481.55/722.32 = 320.36/x
  3. Step 3: Cross multiply
    481.55x = 722.32 × 320.36
  4. Step 4: Simplify right side
    481.55x = 231,398.02
  5. Step 5: Solve for x
    x = 231,398.02/481.55
  6. Step 6: Final answer
    x = 480.53

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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.