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Finding the Fourth Proportional to 268.93, 402.93 and 187.60

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Solution

The fourth proportional to 268.93, 402.93 and 187.60 is: 281.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.93 : 402.93 = 187.60 : x
  2. Step 2: Convert to fraction form
    268.93/402.93 = 187.60/x
  3. Step 3: Cross multiply
    268.93x = 402.93 × 187.60
  4. Step 4: Simplify right side
    268.93x = 75,589.67
  5. Step 5: Solve for x
    x = 75,589.67/268.93
  6. Step 6: Final answer
    x = 281.08

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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.