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Finding the Fourth Proportional to 116.44, 174.66 and 47.91

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Solution

The fourth proportional to 116.44, 174.66 and 47.91 is: 71.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.44 : 174.66 = 47.91 : x
  2. Step 2: Convert to fraction form
    116.44/174.66 = 47.91/x
  3. Step 3: Cross multiply
    116.44x = 174.66 × 47.91
  4. Step 4: Simplify right side
    116.44x = 8,368.44
  5. Step 5: Solve for x
    x = 8,368.44/116.44
  6. Step 6: Final answer
    x = 71.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.