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Finding the Fourth Proportional to 228.27, 342.71 and 151.72

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Solution

The fourth proportional to 228.27, 342.71 and 151.72 is: 227.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.27 : 342.71 = 151.72 : x
  2. Step 2: Convert to fraction form
    228.27/342.71 = 151.72/x
  3. Step 3: Cross multiply
    228.27x = 342.71 × 151.72
  4. Step 4: Simplify right side
    228.27x = 51,995.96
  5. Step 5: Solve for x
    x = 51,995.96/228.27
  6. Step 6: Final answer
    x = 227.78

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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.