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Finding the Fourth Proportional to 358.31, 494.67 and 247.96

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Solution

The fourth proportional to 358.31, 494.67 and 247.96 is: 342.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.31 : 494.67 = 247.96 : x
  2. Step 2: Convert to fraction form
    358.31/494.67 = 247.96/x
  3. Step 3: Cross multiply
    358.31x = 494.67 × 247.96
  4. Step 4: Simplify right side
    358.31x = 122,658.37
  5. Step 5: Solve for x
    x = 122,658.37/358.31
  6. Step 6: Final answer
    x = 342.32

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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.