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Finding the Fourth Proportional to 150.98, 206.79 and 142.11

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Solution

The fourth proportional to 150.98, 206.79 and 142.11 is: 194.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    150.98 : 206.79 = 142.11 : x
  2. Step 2: Convert to fraction form
    150.98/206.79 = 142.11/x
  3. Step 3: Cross multiply
    150.98x = 206.79 × 142.11
  4. Step 4: Simplify right side
    150.98x = 29,387.65
  5. Step 5: Solve for x
    x = 29,387.65/150.98
  6. Step 6: Final answer
    x = 194.65

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.