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Finding the Fourth Proportional to 151.79, 227.31 and 83.35

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Solution

The fourth proportional to 151.79, 227.31 and 83.35 is: 124.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.79 : 227.31 = 83.35 : x
  2. Step 2: Convert to fraction form
    151.79/227.31 = 83.35/x
  3. Step 3: Cross multiply
    151.79x = 227.31 × 83.35
  4. Step 4: Simplify right side
    151.79x = 18,944.98
  5. Step 5: Solve for x
    x = 18,944.98/151.79
  6. Step 6: Final answer
    x = 124.81

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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.