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Finding the Fourth Proportional to 358.89, 494.09 and 338.38

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Solution

The fourth proportional to 358.89, 494.09 and 338.38 is: 465.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.89 : 494.09 = 338.38 : x
  2. Step 2: Convert to fraction form
    358.89/494.09 = 338.38/x
  3. Step 3: Cross multiply
    358.89x = 494.09 × 338.38
  4. Step 4: Simplify right side
    358.89x = 167,190.17
  5. Step 5: Solve for x
    x = 167,190.17/358.89
  6. Step 6: Final answer
    x = 465.85

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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.