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Finding the Fourth Proportional to 266.98, 368.36 and 154.94

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Solution

The fourth proportional to 266.98, 368.36 and 154.94 is: 213.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.98 : 368.36 = 154.94 : x
  2. Step 2: Convert to fraction form
    266.98/368.36 = 154.94/x
  3. Step 3: Cross multiply
    266.98x = 368.36 × 154.94
  4. Step 4: Simplify right side
    266.98x = 57,074.43
  5. Step 5: Solve for x
    x = 57,074.43/266.98
  6. Step 6: Final answer
    x = 213.78

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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.