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Finding the Fourth Proportional to 326.56, 486.38 and 324.99

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Solution

The fourth proportional to 326.56, 486.38 and 324.99 is: 484.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.56 : 486.38 = 324.99 : x
  2. Step 2: Convert to fraction form
    326.56/486.38 = 324.99/x
  3. Step 3: Cross multiply
    326.56x = 486.38 × 324.99
  4. Step 4: Simplify right side
    326.56x = 158,068.64
  5. Step 5: Solve for x
    x = 158,068.64/326.56
  6. Step 6: Final answer
    x = 484.04

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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.