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Finding the Fourth Proportional to 176.09, 243.13 and 113.95

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Solution

The fourth proportional to 176.09, 243.13 and 113.95 is: 157.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.09 : 243.13 = 113.95 : x
  2. Step 2: Convert to fraction form
    176.09/243.13 = 113.95/x
  3. Step 3: Cross multiply
    176.09x = 243.13 × 113.95
  4. Step 4: Simplify right side
    176.09x = 27,704.66
  5. Step 5: Solve for x
    x = 27,704.66/176.09
  6. Step 6: Final answer
    x = 157.33

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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.