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Finding the Fourth Proportional to 176.17, 243.20 and 136.74

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Solution

The fourth proportional to 176.17, 243.20 and 136.74 is: 188.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.17 : 243.20 = 136.74 : x
  2. Step 2: Convert to fraction form
    176.17/243.20 = 136.74/x
  3. Step 3: Cross multiply
    176.17x = 243.20 × 136.74
  4. Step 4: Simplify right side
    176.17x = 33,255.74
  5. Step 5: Solve for x
    x = 33,255.74/176.17
  6. Step 6: Final answer
    x = 188.77

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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.