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Finding the Fourth Proportional to 176.34, 243.09 and 143.54

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Solution

The fourth proportional to 176.34, 243.09 and 143.54 is: 197.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.34 : 243.09 = 143.54 : x
  2. Step 2: Convert to fraction form
    176.34/243.09 = 143.54/x
  3. Step 3: Cross multiply
    176.34x = 243.09 × 143.54
  4. Step 4: Simplify right side
    176.34x = 34,891.92
  5. Step 5: Solve for x
    x = 34,891.92/176.34
  6. Step 6: Final answer
    x = 197.87

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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.