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Finding the Fourth Proportional to 439.98, 606.51 and 292.29

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Solution

The fourth proportional to 439.98, 606.51 and 292.29 is: 402.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.98 : 606.51 = 292.29 : x
  2. Step 2: Convert to fraction form
    439.98/606.51 = 292.29/x
  3. Step 3: Cross multiply
    439.98x = 606.51 × 292.29
  4. Step 4: Simplify right side
    439.98x = 177,276.81
  5. Step 5: Solve for x
    x = 177,276.81/439.98
  6. Step 6: Final answer
    x = 402.92

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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.