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Finding the Fourth Proportional to 151.42, 226.98 and 79.32

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Solution

The fourth proportional to 151.42, 226.98 and 79.32 is: 118.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.42 : 226.98 = 79.32 : x
  2. Step 2: Convert to fraction form
    151.42/226.98 = 79.32/x
  3. Step 3: Cross multiply
    151.42x = 226.98 × 79.32
  4. Step 4: Simplify right side
    151.42x = 18,004.05
  5. Step 5: Solve for x
    x = 18,004.05/151.42
  6. Step 6: Final answer
    x = 118.90

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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.