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Finding the Fourth Proportional to 195.72, 294.79 and 190.86

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Solution

The fourth proportional to 195.72, 294.79 and 190.86 is: 287.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.72 : 294.79 = 190.86 : x
  2. Step 2: Convert to fraction form
    195.72/294.79 = 190.86/x
  3. Step 3: Cross multiply
    195.72x = 294.79 × 190.86
  4. Step 4: Simplify right side
    195.72x = 56,263.62
  5. Step 5: Solve for x
    x = 56,263.62/195.72
  6. Step 6: Final answer
    x = 287.47

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.