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Finding the Fourth Proportional to 392.29, 587.94 and 299.04

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Solution

The fourth proportional to 392.29, 587.94 and 299.04 is: 448.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.29 : 587.94 = 299.04 : x
  2. Step 2: Convert to fraction form
    392.29/587.94 = 299.04/x
  3. Step 3: Cross multiply
    392.29x = 587.94 × 299.04
  4. Step 4: Simplify right side
    392.29x = 175,817.58
  5. Step 5: Solve for x
    x = 175,817.58/392.29
  6. Step 6: Final answer
    x = 448.18

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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.