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Finding the Fourth Proportional to 151.89, 227.81 and 142.67

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Solution

The fourth proportional to 151.89, 227.81 and 142.67 is: 213.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.89 : 227.81 = 142.67 : x
  2. Step 2: Convert to fraction form
    151.89/227.81 = 142.67/x
  3. Step 3: Cross multiply
    151.89x = 227.81 × 142.67
  4. Step 4: Simplify right side
    151.89x = 32,501.46
  5. Step 5: Solve for x
    x = 32,501.46/151.89
  6. Step 6: Final answer
    x = 213.97

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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.