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Finding the Fourth Proportional to 275.07, 378.96 and 192.03

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Solution

The fourth proportional to 275.07, 378.96 and 192.03 is: 264.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.07 : 378.96 = 192.03 : x
  2. Step 2: Convert to fraction form
    275.07/378.96 = 192.03/x
  3. Step 3: Cross multiply
    275.07x = 378.96 × 192.03
  4. Step 4: Simplify right side
    275.07x = 72,771.69
  5. Step 5: Solve for x
    x = 72,771.69/275.07
  6. Step 6: Final answer
    x = 264.56

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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.