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Finding the Fourth Proportional to 151.92, 229.68 and 151.20

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Solution

The fourth proportional to 151.92, 229.68 and 151.20 is: 228.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.92 : 229.68 = 151.20 : x
  2. Step 2: Convert to fraction form
    151.92/229.68 = 151.20/x
  3. Step 3: Cross multiply
    151.92x = 229.68 × 151.20
  4. Step 4: Simplify right side
    151.92x = 34,727.62
  5. Step 5: Solve for x
    x = 34,727.62/151.92
  6. Step 6: Final answer
    x = 228.59

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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.