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Finding the Fourth Proportional to 401.96, 554.40 and 270.92

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Solution

The fourth proportional to 401.96, 554.40 and 270.92 is: 373.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.96 : 554.40 = 270.92 : x
  2. Step 2: Convert to fraction form
    401.96/554.40 = 270.92/x
  3. Step 3: Cross multiply
    401.96x = 554.40 × 270.92
  4. Step 4: Simplify right side
    401.96x = 150,198.05
  5. Step 5: Solve for x
    x = 150,198.05/401.96
  6. Step 6: Final answer
    x = 373.66

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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.