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Finding the Fourth Proportional to 290.97, 401.53 and 159.97

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Solution

The fourth proportional to 290.97, 401.53 and 159.97 is: 220.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    290.97 : 401.53 = 159.97 : x
  2. Step 2: Convert to fraction form
    290.97/401.53 = 159.97/x
  3. Step 3: Cross multiply
    290.97x = 401.53 × 159.97
  4. Step 4: Simplify right side
    290.97x = 64,232.75
  5. Step 5: Solve for x
    x = 64,232.75/290.97
  6. Step 6: Final answer
    x = 220.75

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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.