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Finding the Fourth Proportional to 175.44, 241.76 and 142.72

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Solution

The fourth proportional to 175.44, 241.76 and 142.72 is: 196.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    175.44 : 241.76 = 142.72 : x
  2. Step 2: Convert to fraction form
    175.44/241.76 = 142.72/x
  3. Step 3: Cross multiply
    175.44x = 241.76 × 142.72
  4. Step 4: Simplify right side
    175.44x = 34,503.99
  5. Step 5: Solve for x
    x = 34,503.99/175.44
  6. Step 6: Final answer
    x = 196.67

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Why These Related Problems?

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