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Finding the Fourth Proportional to 465.36, 698.09 and 191.43

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Solution

The fourth proportional to 465.36, 698.09 and 191.43 is: 287.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    465.36 : 698.09 = 191.43 : x
  2. Step 2: Convert to fraction form
    465.36/698.09 = 191.43/x
  3. Step 3: Cross multiply
    465.36x = 698.09 × 191.43
  4. Step 4: Simplify right side
    465.36x = 133,634.41
  5. Step 5: Solve for x
    x = 133,634.41/465.36
  6. Step 6: Final answer
    x = 287.16

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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.