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Finding the Fourth Proportional to 326.60, 490.04 and 249.51

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Solution

The fourth proportional to 326.60, 490.04 and 249.51 is: 374.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.60 : 490.04 = 249.51 : x
  2. Step 2: Convert to fraction form
    326.60/490.04 = 249.51/x
  3. Step 3: Cross multiply
    326.60x = 490.04 × 249.51
  4. Step 4: Simplify right side
    326.60x = 122,268.63
  5. Step 5: Solve for x
    x = 122,268.63/326.60
  6. Step 6: Final answer
    x = 374.37

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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.