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Finding the Fourth Proportional to 158.25, 238.60 and 126.57

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Solution

The fourth proportional to 158.25, 238.60 and 126.57 is: 190.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.25 : 238.60 = 126.57 : x
  2. Step 2: Convert to fraction form
    158.25/238.60 = 126.57/x
  3. Step 3: Cross multiply
    158.25x = 238.60 × 126.57
  4. Step 4: Simplify right side
    158.25x = 30,199.29
  5. Step 5: Solve for x
    x = 30,199.29/158.25
  6. Step 6: Final answer
    x = 190.83

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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.