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Finding the Fourth Proportional to 392.58, 588.71 and 158.25

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Solution

The fourth proportional to 392.58, 588.71 and 158.25 is: 237.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.58 : 588.71 = 158.25 : x
  2. Step 2: Convert to fraction form
    392.58/588.71 = 158.25/x
  3. Step 3: Cross multiply
    392.58x = 588.71 × 158.25
  4. Step 4: Simplify right side
    392.58x = 93,163.36
  5. Step 5: Solve for x
    x = 93,163.36/392.58
  6. Step 6: Final answer
    x = 237.31

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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.