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Finding the Fourth Proportional to 266.54, 367.07 and 243.45

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Solution

The fourth proportional to 266.54, 367.07 and 243.45 is: 335.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.54 : 367.07 = 243.45 : x
  2. Step 2: Convert to fraction form
    266.54/367.07 = 243.45/x
  3. Step 3: Cross multiply
    266.54x = 367.07 × 243.45
  4. Step 4: Simplify right side
    266.54x = 89,361.97
  5. Step 5: Solve for x
    x = 89,361.97/266.54
  6. Step 6: Final answer
    x = 335.27

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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.