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Finding the Fourth Proportional to 116.06, 173.97 and 42.88

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Solution

The fourth proportional to 116.06, 173.97 and 42.88 is: 64.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.06 : 173.97 = 42.88 : x
  2. Step 2: Convert to fraction form
    116.06/173.97 = 42.88/x
  3. Step 3: Cross multiply
    116.06x = 173.97 × 42.88
  4. Step 4: Simplify right side
    116.06x = 7,459.40
  5. Step 5: Solve for x
    x = 7,459.40/116.06
  6. Step 6: Final answer
    x = 64.27

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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.