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Finding the Fourth Proportional to 358.11, 493.82 and 245.96

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Solution

The fourth proportional to 358.11, 493.82 and 245.96 is: 339.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.11 : 493.82 = 245.96 : x
  2. Step 2: Convert to fraction form
    358.11/493.82 = 245.96/x
  3. Step 3: Cross multiply
    358.11x = 493.82 × 245.96
  4. Step 4: Simplify right side
    358.11x = 121,459.97
  5. Step 5: Solve for x
    x = 121,459.97/358.11
  6. Step 6: Final answer
    x = 339.17

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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.