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Finding the Fourth Proportional to 268.09, 401.54 and 165.06

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Solution

The fourth proportional to 268.09, 401.54 and 165.06 is: 247.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.09 : 401.54 = 165.06 : x
  2. Step 2: Convert to fraction form
    268.09/401.54 = 165.06/x
  3. Step 3: Cross multiply
    268.09x = 401.54 × 165.06
  4. Step 4: Simplify right side
    268.09x = 66,277.37
  5. Step 5: Solve for x
    x = 66,277.37/268.09
  6. Step 6: Final answer
    x = 247.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.