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Finding the Fourth Proportional to 151.41, 208.49 and 140.52

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Solution

The fourth proportional to 151.41, 208.49 and 140.52 is: 193.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.41 : 208.49 = 140.52 : x
  2. Step 2: Convert to fraction form
    151.41/208.49 = 140.52/x
  3. Step 3: Cross multiply
    151.41x = 208.49 × 140.52
  4. Step 4: Simplify right side
    151.41x = 29,297.01
  5. Step 5: Solve for x
    x = 29,297.01/151.41
  6. Step 6: Final answer
    x = 193.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.