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Finding the Fourth Proportional to 152.75, 230.17 and 136.17

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Solution

The fourth proportional to 152.75, 230.17 and 136.17 is: 205.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.75 : 230.17 = 136.17 : x
  2. Step 2: Convert to fraction form
    152.75/230.17 = 136.17/x
  3. Step 3: Cross multiply
    152.75x = 230.17 × 136.17
  4. Step 4: Simplify right side
    152.75x = 31,342.25
  5. Step 5: Solve for x
    x = 31,342.25/152.75
  6. Step 6: Final answer
    x = 205.19

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.