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Finding the Fourth Proportional to 284.82, 393.15 and 168.38

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Solution

The fourth proportional to 284.82, 393.15 and 168.38 is: 232.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.82 : 393.15 = 168.38 : x
  2. Step 2: Convert to fraction form
    284.82/393.15 = 168.38/x
  3. Step 3: Cross multiply
    284.82x = 393.15 × 168.38
  4. Step 4: Simplify right side
    284.82x = 66,196.63
  5. Step 5: Solve for x
    x = 66,196.63/284.82
  6. Step 6: Final answer
    x = 232.42

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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.