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Finding the Fourth Proportional to 290.46, 401.04 and 192.38

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Solution

The fourth proportional to 290.46, 401.04 and 192.38 is: 265.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    290.46 : 401.04 = 192.38 : x
  2. Step 2: Convert to fraction form
    290.46/401.04 = 192.38/x
  3. Step 3: Cross multiply
    290.46x = 401.04 × 192.38
  4. Step 4: Simplify right side
    290.46x = 77,153.08
  5. Step 5: Solve for x
    x = 77,153.08/290.46
  6. Step 6: Final answer
    x = 265.62

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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.