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Finding the Fourth Proportional to 176.36, 243.46 and 118.20

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Solution

The fourth proportional to 176.36, 243.46 and 118.20 is: 163.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.36 : 243.46 = 118.20 : x
  2. Step 2: Convert to fraction form
    176.36/243.46 = 118.20/x
  3. Step 3: Cross multiply
    176.36x = 243.46 × 118.20
  4. Step 4: Simplify right side
    176.36x = 28,776.97
  5. Step 5: Solve for x
    x = 28,776.97/176.36
  6. Step 6: Final answer
    x = 163.17

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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.