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Finding the Fourth Proportional to 158.70, 236.36 and 157.92

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Solution

The fourth proportional to 158.70, 236.36 and 157.92 is: 235.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.70 : 236.36 = 157.92 : x
  2. Step 2: Convert to fraction form
    158.70/236.36 = 157.92/x
  3. Step 3: Cross multiply
    158.70x = 236.36 × 157.92
  4. Step 4: Simplify right side
    158.70x = 37,325.97
  5. Step 5: Solve for x
    x = 37,325.97/158.70
  6. Step 6: Final answer
    x = 235.20

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.