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Finding the Fourth Proportional to 320.17, 441.82 and 195.81

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Solution

The fourth proportional to 320.17, 441.82 and 195.81 is: 270.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    320.17 : 441.82 = 195.81 : x
  2. Step 2: Convert to fraction form
    320.17/441.82 = 195.81/x
  3. Step 3: Cross multiply
    320.17x = 441.82 × 195.81
  4. Step 4: Simplify right side
    320.17x = 86,512.77
  5. Step 5: Solve for x
    x = 86,512.77/320.17
  6. Step 6: Final answer
    x = 270.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.