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Finding the Fourth Proportional to 176.88, 243.81 and 160.38

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Solution

The fourth proportional to 176.88, 243.81 and 160.38 is: 221.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.88 : 243.81 = 160.38 : x
  2. Step 2: Convert to fraction form
    176.88/243.81 = 160.38/x
  3. Step 3: Cross multiply
    176.88x = 243.81 × 160.38
  4. Step 4: Simplify right side
    176.88x = 39,102.25
  5. Step 5: Solve for x
    x = 39,102.25/176.88
  6. Step 6: Final answer
    x = 221.06

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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.