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Finding the Fourth Proportional to 358.88, 494.12 and 326.48

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Solution

The fourth proportional to 358.88, 494.12 and 326.48 is: 449.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.88 : 494.12 = 326.48 : x
  2. Step 2: Convert to fraction form
    358.88/494.12 = 326.48/x
  3. Step 3: Cross multiply
    358.88x = 494.12 × 326.48
  4. Step 4: Simplify right side
    358.88x = 161,320.30
  5. Step 5: Solve for x
    x = 161,320.30/358.88
  6. Step 6: Final answer
    x = 449.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.