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Finding the Fourth Proportional to 354.92, 490.05 and 349.25

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Solution

The fourth proportional to 354.92, 490.05 and 349.25 is: 482.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.92 : 490.05 = 349.25 : x
  2. Step 2: Convert to fraction form
    354.92/490.05 = 349.25/x
  3. Step 3: Cross multiply
    354.92x = 490.05 × 349.25
  4. Step 4: Simplify right side
    354.92x = 171,147.51
  5. Step 5: Solve for x
    x = 171,147.51/354.92
  6. Step 6: Final answer
    x = 482.22

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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.