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Finding the Fourth Proportional to 151.30, 225.73 and 137.85

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Solution

The fourth proportional to 151.30, 225.73 and 137.85 is: 205.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.30 : 225.73 = 137.85 : x
  2. Step 2: Convert to fraction form
    151.30/225.73 = 137.85/x
  3. Step 3: Cross multiply
    151.30x = 225.73 × 137.85
  4. Step 4: Simplify right side
    151.30x = 31,116.88
  5. Step 5: Solve for x
    x = 31,116.88/151.30
  6. Step 6: Final answer
    x = 205.66

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.