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Finding the Fourth Proportional to 194.09, 290.99 and 70.67

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Solution

The fourth proportional to 194.09, 290.99 and 70.67 is: 105.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.09 : 290.99 = 70.67 : x
  2. Step 2: Convert to fraction form
    194.09/290.99 = 70.67/x
  3. Step 3: Cross multiply
    194.09x = 290.99 × 70.67
  4. Step 4: Simplify right side
    194.09x = 20,565.17
  5. Step 5: Solve for x
    x = 20,565.17/194.09
  6. Step 6: Final answer
    x = 105.96

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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.