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Finding the Fourth Proportional to 439.92, 606.84 and 292.32

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Solution

The fourth proportional to 439.92, 606.84 and 292.32 is: 403.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.92 : 606.84 = 292.32 : x
  2. Step 2: Convert to fraction form
    439.92/606.84 = 292.32/x
  3. Step 3: Cross multiply
    439.92x = 606.84 × 292.32
  4. Step 4: Simplify right side
    439.92x = 177,391.47
  5. Step 5: Solve for x
    x = 177,391.47/439.92
  6. Step 6: Final answer
    x = 403.24

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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.