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Finding the Fourth Proportional to 151.38, 228.09 and 124.92

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Solution

The fourth proportional to 151.38, 228.09 and 124.92 is: 188.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.38 : 228.09 = 124.92 : x
  2. Step 2: Convert to fraction form
    151.38/228.09 = 124.92/x
  3. Step 3: Cross multiply
    151.38x = 228.09 × 124.92
  4. Step 4: Simplify right side
    151.38x = 28,493.00
  5. Step 5: Solve for x
    x = 28,493.00/151.38
  6. Step 6: Final answer
    x = 188.22

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.