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Finding the Fourth Proportional to 325.56, 484.90 and 323.99

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Solution

The fourth proportional to 325.56, 484.90 and 323.99 is: 482.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.56 : 484.90 = 323.99 : x
  2. Step 2: Convert to fraction form
    325.56/484.90 = 323.99/x
  3. Step 3: Cross multiply
    325.56x = 484.90 × 323.99
  4. Step 4: Simplify right side
    325.56x = 157,101.13
  5. Step 5: Solve for x
    x = 157,101.13/325.56
  6. Step 6: Final answer
    x = 482.56

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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.