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Finding the Fourth Proportional to 354.83, 490.14 and 272.96

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Solution

The fourth proportional to 354.83, 490.14 and 272.96 is: 377.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.83 : 490.14 = 272.96 : x
  2. Step 2: Convert to fraction form
    354.83/490.14 = 272.96/x
  3. Step 3: Cross multiply
    354.83x = 490.14 × 272.96
  4. Step 4: Simplify right side
    354.83x = 133,786.16
  5. Step 5: Solve for x
    x = 133,786.16/354.83
  6. Step 6: Final answer
    x = 377.04

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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.