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Finding the Fourth Proportional to 266.49, 369.36 and 261.90

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Solution

The fourth proportional to 266.49, 369.36 and 261.90 is: 363.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.49 : 369.36 = 261.90 : x
  2. Step 2: Convert to fraction form
    266.49/369.36 = 261.90/x
  3. Step 3: Cross multiply
    266.49x = 369.36 × 261.90
  4. Step 4: Simplify right side
    266.49x = 96,735.38
  5. Step 5: Solve for x
    x = 96,735.38/266.49
  6. Step 6: Final answer
    x = 363.00

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.