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Finding the Fourth Proportional to 151.02, 207.11 and 144.79

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Solution

The fourth proportional to 151.02, 207.11 and 144.79 is: 198.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.02 : 207.11 = 144.79 : x
  2. Step 2: Convert to fraction form
    151.02/207.11 = 144.79/x
  3. Step 3: Cross multiply
    151.02x = 207.11 × 144.79
  4. Step 4: Simplify right side
    151.02x = 29,987.46
  5. Step 5: Solve for x
    x = 29,987.46/151.02
  6. Step 6: Final answer
    x = 198.57

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.