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Finding the Fourth Proportional to 151.51, 209.00 and 93.25

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Solution

The fourth proportional to 151.51, 209.00 and 93.25 is: 128.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.51 : 209.00 = 93.25 : x
  2. Step 2: Convert to fraction form
    151.51/209.00 = 93.25/x
  3. Step 3: Cross multiply
    151.51x = 209.00 × 93.25
  4. Step 4: Simplify right side
    151.51x = 19,488.78
  5. Step 5: Solve for x
    x = 19,488.78/151.51
  6. Step 6: Final answer
    x = 128.63

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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.