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Finding the Fourth Proportional to 158.15, 236.87 and 137.32

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Solution

The fourth proportional to 158.15, 236.87 and 137.32 is: 205.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.15 : 236.87 = 137.32 : x
  2. Step 2: Convert to fraction form
    158.15/236.87 = 137.32/x
  3. Step 3: Cross multiply
    158.15x = 236.87 × 137.32
  4. Step 4: Simplify right side
    158.15x = 32,527.66
  5. Step 5: Solve for x
    x = 32,527.66/158.15
  6. Step 6: Final answer
    x = 205.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.