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Finding the Fourth Proportional to 151.99, 209.68 and 133.51

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Solution

The fourth proportional to 151.99, 209.68 and 133.51 is: 184.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.99 : 209.68 = 133.51 : x
  2. Step 2: Convert to fraction form
    151.99/209.68 = 133.51/x
  3. Step 3: Cross multiply
    151.99x = 209.68 × 133.51
  4. Step 4: Simplify right side
    151.99x = 27,994.38
  5. Step 5: Solve for x
    x = 27,994.38/151.99
  6. Step 6: Final answer
    x = 184.19

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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.