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Finding the Fourth Proportional to 151.09, 225.34 and 136.51

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Solution

The fourth proportional to 151.09, 225.34 and 136.51 is: 203.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.09 : 225.34 = 136.51 : x
  2. Step 2: Convert to fraction form
    151.09/225.34 = 136.51/x
  3. Step 3: Cross multiply
    151.09x = 225.34 × 136.51
  4. Step 4: Simplify right side
    151.09x = 30,760.26
  5. Step 5: Solve for x
    x = 30,760.26/151.09
  6. Step 6: Final answer
    x = 203.59

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.