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Finding the Fourth Proportional to 358.82, 492.55 and 331.13

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Solution

The fourth proportional to 358.82, 492.55 and 331.13 is: 454.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.82 : 492.55 = 331.13 : x
  2. Step 2: Convert to fraction form
    358.82/492.55 = 331.13/x
  3. Step 3: Cross multiply
    358.82x = 492.55 × 331.13
  4. Step 4: Simplify right side
    358.82x = 163,098.49
  5. Step 5: Solve for x
    x = 163,098.49/358.82
  6. Step 6: Final answer
    x = 454.54

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.