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Finding the Fourth Proportional to 152.88, 230.19 and 112.59

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Solution

The fourth proportional to 152.88, 230.19 and 112.59 is: 169.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.88 : 230.19 = 112.59 : x
  2. Step 2: Convert to fraction form
    152.88/230.19 = 112.59/x
  3. Step 3: Cross multiply
    152.88x = 230.19 × 112.59
  4. Step 4: Simplify right side
    152.88x = 25,917.09
  5. Step 5: Solve for x
    x = 25,917.09/152.88
  6. Step 6: Final answer
    x = 169.53

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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.