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Finding the Fourth Proportional to 174.78, 240.84 and 116.64

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Solution

The fourth proportional to 174.78, 240.84 and 116.64 is: 160.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.78 : 240.84 = 116.64 : x
  2. Step 2: Convert to fraction form
    174.78/240.84 = 116.64/x
  3. Step 3: Cross multiply
    174.78x = 240.84 × 116.64
  4. Step 4: Simplify right side
    174.78x = 28,091.58
  5. Step 5: Solve for x
    x = 28,091.58/174.78
  6. Step 6: Final answer
    x = 160.73

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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.