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Finding the Fourth Proportional to 402.14, 554.96 and 236.38

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Solution

The fourth proportional to 402.14, 554.96 and 236.38 is: 326.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.14 : 554.96 = 236.38 : x
  2. Step 2: Convert to fraction form
    402.14/554.96 = 236.38/x
  3. Step 3: Cross multiply
    402.14x = 554.96 × 236.38
  4. Step 4: Simplify right side
    402.14x = 131,181.44
  5. Step 5: Solve for x
    x = 131,181.44/402.14
  6. Step 6: Final answer
    x = 326.21

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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.