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Finding the Fourth Proportional to 116.80, 174.29 and 106.58

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Solution

The fourth proportional to 116.80, 174.29 and 106.58 is: 159.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.80 : 174.29 = 106.58 : x
  2. Step 2: Convert to fraction form
    116.80/174.29 = 106.58/x
  3. Step 3: Cross multiply
    116.80x = 174.29 × 106.58
  4. Step 4: Simplify right side
    116.80x = 18,575.83
  5. Step 5: Solve for x
    x = 18,575.83/116.80
  6. Step 6: Final answer
    x = 159.04

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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.