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Finding the Fourth Proportional to 176.22, 243.20 and 97.55

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Solution

The fourth proportional to 176.22, 243.20 and 97.55 is: 134.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.22 : 243.20 = 97.55 : x
  2. Step 2: Convert to fraction form
    176.22/243.20 = 97.55/x
  3. Step 3: Cross multiply
    176.22x = 243.20 × 97.55
  4. Step 4: Simplify right side
    176.22x = 23,722.46
  5. Step 5: Solve for x
    x = 23,722.46/176.22
  6. Step 6: Final answer
    x = 134.62

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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.