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Finding the Fourth Proportional to 290.41, 401.27 and 253.51

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Solution

The fourth proportional to 290.41, 401.27 and 253.51 is: 350.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    290.41 : 401.27 = 253.51 : x
  2. Step 2: Convert to fraction form
    290.41/401.27 = 253.51/x
  3. Step 3: Cross multiply
    290.41x = 401.27 × 253.51
  4. Step 4: Simplify right side
    290.41x = 101,723.69
  5. Step 5: Solve for x
    x = 101,723.69/290.41
  6. Step 6: Final answer
    x = 350.28

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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.