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Finding the Fourth Proportional to 275.85, 378.53 and 251.19

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Solution

The fourth proportional to 275.85, 378.53 and 251.19 is: 344.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.85 : 378.53 = 251.19 : x
  2. Step 2: Convert to fraction form
    275.85/378.53 = 251.19/x
  3. Step 3: Cross multiply
    275.85x = 378.53 × 251.19
  4. Step 4: Simplify right side
    275.85x = 95,081.69
  5. Step 5: Solve for x
    x = 95,081.69/275.85
  6. Step 6: Final answer
    x = 344.69

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These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.