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Finding the Fourth Proportional to 401.95, 554.93 and 271.09

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Solution

The fourth proportional to 401.95, 554.93 and 271.09 is: 374.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.95 : 554.93 = 271.09 : x
  2. Step 2: Convert to fraction form
    401.95/554.93 = 271.09/x
  3. Step 3: Cross multiply
    401.95x = 554.93 × 271.09
  4. Step 4: Simplify right side
    401.95x = 150,435.97
  5. Step 5: Solve for x
    x = 150,435.97/401.95
  6. Step 6: Final answer
    x = 374.27

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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.