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Finding the Fourth Proportional to 266.77, 368.49 and 220.33

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Solution

The fourth proportional to 266.77, 368.49 and 220.33 is: 304.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.77 : 368.49 = 220.33 : x
  2. Step 2: Convert to fraction form
    266.77/368.49 = 220.33/x
  3. Step 3: Cross multiply
    266.77x = 368.49 × 220.33
  4. Step 4: Simplify right side
    266.77x = 81,189.40
  5. Step 5: Solve for x
    x = 81,189.40/266.77
  6. Step 6: Final answer
    x = 304.34

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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.