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Finding the Fourth Proportional to 116.21, 174.95 and 105.50

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Solution

The fourth proportional to 116.21, 174.95 and 105.50 is: 158.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.21 : 174.95 = 105.50 : x
  2. Step 2: Convert to fraction form
    116.21/174.95 = 105.50/x
  3. Step 3: Cross multiply
    116.21x = 174.95 × 105.50
  4. Step 4: Simplify right side
    116.21x = 18,455.82
  5. Step 5: Solve for x
    x = 18,455.82/116.21
  6. Step 6: Final answer
    x = 158.82

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.