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Finding the Fourth Proportional to 116.61, 173.64 and 115.33

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Solution

The fourth proportional to 116.61, 173.64 and 115.33 is: 171.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.61 : 173.64 = 115.33 : x
  2. Step 2: Convert to fraction form
    116.61/173.64 = 115.33/x
  3. Step 3: Cross multiply
    116.61x = 173.64 × 115.33
  4. Step 4: Simplify right side
    116.61x = 20,025.03
  5. Step 5: Solve for x
    x = 20,025.03/116.61
  6. Step 6: Final answer
    x = 171.73

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.