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Finding the Fourth Proportional to 344.97, 476.81 and 290.49

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Solution

The fourth proportional to 344.97, 476.81 and 290.49 is: 401.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.97 : 476.81 = 290.49 : x
  2. Step 2: Convert to fraction form
    344.97/476.81 = 290.49/x
  3. Step 3: Cross multiply
    344.97x = 476.81 × 290.49
  4. Step 4: Simplify right side
    344.97x = 138,507.08
  5. Step 5: Solve for x
    x = 138,507.08/344.97
  6. Step 6: Final answer
    x = 401.50

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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.