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Finding the Fourth Proportional to 179.74, 269.47 and 69.99

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Solution

The fourth proportional to 179.74, 269.47 and 69.99 is: 104.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.74 : 269.47 = 69.99 : x
  2. Step 2: Convert to fraction form
    179.74/269.47 = 69.99/x
  3. Step 3: Cross multiply
    179.74x = 269.47 × 69.99
  4. Step 4: Simplify right side
    179.74x = 18,860.21
  5. Step 5: Solve for x
    x = 18,860.21/179.74
  6. Step 6: Final answer
    x = 104.93

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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.