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Finding the Fourth Proportional to 441.59, 609.45 and 279.91

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Solution

The fourth proportional to 441.59, 609.45 and 279.91 is: 386.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.59 : 609.45 = 279.91 : x
  2. Step 2: Convert to fraction form
    441.59/609.45 = 279.91/x
  3. Step 3: Cross multiply
    441.59x = 609.45 × 279.91
  4. Step 4: Simplify right side
    441.59x = 170,591.15
  5. Step 5: Solve for x
    x = 170,591.15/441.59
  6. Step 6: Final answer
    x = 386.31

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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.