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Finding the Fourth Proportional to 151.73, 209.38 and 93.47

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Solution

The fourth proportional to 151.73, 209.38 and 93.47 is: 128.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.73 : 209.38 = 93.47 : x
  2. Step 2: Convert to fraction form
    151.73/209.38 = 93.47/x
  3. Step 3: Cross multiply
    151.73x = 209.38 × 93.47
  4. Step 4: Simplify right side
    151.73x = 19,571.04
  5. Step 5: Solve for x
    x = 19,571.04/151.73
  6. Step 6: Final answer
    x = 128.99

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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.