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Finding the Fourth Proportional to 358.79, 494.73 and 234.45

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Solution

The fourth proportional to 358.79, 494.73 and 234.45 is: 323.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.79 : 494.73 = 234.45 : x
  2. Step 2: Convert to fraction form
    358.79/494.73 = 234.45/x
  3. Step 3: Cross multiply
    358.79x = 494.73 × 234.45
  4. Step 4: Simplify right side
    358.79x = 115,989.45
  5. Step 5: Solve for x
    x = 115,989.45/358.79
  6. Step 6: Final answer
    x = 323.28

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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.