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Finding the Fourth Proportional to 392.10, 588.14 and 132.05

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Solution

The fourth proportional to 392.10, 588.14 and 132.05 is: 198.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.10 : 588.14 = 132.05 : x
  2. Step 2: Convert to fraction form
    392.10/588.14 = 132.05/x
  3. Step 3: Cross multiply
    392.10x = 588.14 × 132.05
  4. Step 4: Simplify right side
    392.10x = 77,665.69
  5. Step 5: Solve for x
    x = 77,665.69/392.10
  6. Step 6: Final answer
    x = 198.08

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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.