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Finding the Fourth Proportional to 179.21, 247.35 and 105.50

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Solution

The fourth proportional to 179.21, 247.35 and 105.50 is: 145.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.21 : 247.35 = 105.50 : x
  2. Step 2: Convert to fraction form
    179.21/247.35 = 105.50/x
  3. Step 3: Cross multiply
    179.21x = 247.35 × 105.50
  4. Step 4: Simplify right side
    179.21x = 26,096.44
  5. Step 5: Solve for x
    x = 26,096.44/179.21
  6. Step 6: Final answer
    x = 145.62

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.