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Finding the Fourth Proportional to 268.04, 401.32 and 190.72

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Solution

The fourth proportional to 268.04, 401.32 and 190.72 is: 285.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.04 : 401.32 = 190.72 : x
  2. Step 2: Convert to fraction form
    268.04/401.32 = 190.72/x
  3. Step 3: Cross multiply
    268.04x = 401.32 × 190.72
  4. Step 4: Simplify right side
    268.04x = 76,539.75
  5. Step 5: Solve for x
    x = 76,539.75/268.04
  6. Step 6: Final answer
    x = 285.55

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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.