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Finding the Fourth Proportional to 116.97, 174.59 and 98.34

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Solution

The fourth proportional to 116.97, 174.59 and 98.34 is: 146.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.97 : 174.59 = 98.34 : x
  2. Step 2: Convert to fraction form
    116.97/174.59 = 98.34/x
  3. Step 3: Cross multiply
    116.97x = 174.59 × 98.34
  4. Step 4: Simplify right side
    116.97x = 17,169.18
  5. Step 5: Solve for x
    x = 17,169.18/116.97
  6. Step 6: Final answer
    x = 146.78

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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.