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Finding the Fourth Proportional to 439.91, 606.17 and 360.98

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Solution

The fourth proportional to 439.91, 606.17 and 360.98 is: 497.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.91 : 606.17 = 360.98 : x
  2. Step 2: Convert to fraction form
    439.91/606.17 = 360.98/x
  3. Step 3: Cross multiply
    439.91x = 606.17 × 360.98
  4. Step 4: Simplify right side
    439.91x = 218,815.25
  5. Step 5: Solve for x
    x = 218,815.25/439.91
  6. Step 6: Final answer
    x = 497.41

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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.