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Finding the Fourth Proportional to 293.88, 441.30 and 280.89

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Solution

The fourth proportional to 293.88, 441.30 and 280.89 is: 421.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.88 : 441.30 = 280.89 : x
  2. Step 2: Convert to fraction form
    293.88/441.30 = 280.89/x
  3. Step 3: Cross multiply
    293.88x = 441.30 × 280.89
  4. Step 4: Simplify right side
    293.88x = 123,956.76
  5. Step 5: Solve for x
    x = 123,956.76/293.88
  6. Step 6: Final answer
    x = 421.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.