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Finding the Fourth Proportional to 159.20, 238.88 and 105.08

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Solution

The fourth proportional to 159.20, 238.88 and 105.08 is: 157.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.20 : 238.88 = 105.08 : x
  2. Step 2: Convert to fraction form
    159.20/238.88 = 105.08/x
  3. Step 3: Cross multiply
    159.20x = 238.88 × 105.08
  4. Step 4: Simplify right side
    159.20x = 25,101.51
  5. Step 5: Solve for x
    x = 25,101.51/159.20
  6. Step 6: Final answer
    x = 157.67

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