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Finding the Fourth Proportional to 401.49, 554.04 and 268.92

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Solution

The fourth proportional to 401.49, 554.04 and 268.92 is: 371.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.49 : 554.04 = 268.92 : x
  2. Step 2: Convert to fraction form
    401.49/554.04 = 268.92/x
  3. Step 3: Cross multiply
    401.49x = 554.04 × 268.92
  4. Step 4: Simplify right side
    401.49x = 148,992.44
  5. Step 5: Solve for x
    x = 148,992.44/401.49
  6. Step 6: Final answer
    x = 371.10

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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.