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Finding the Fourth Proportional to 266.66, 368.58 and 193.49

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Solution

The fourth proportional to 266.66, 368.58 and 193.49 is: 267.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.66 : 368.58 = 193.49 : x
  2. Step 2: Convert to fraction form
    266.66/368.58 = 193.49/x
  3. Step 3: Cross multiply
    266.66x = 368.58 × 193.49
  4. Step 4: Simplify right side
    266.66x = 71,316.54
  5. Step 5: Solve for x
    x = 71,316.54/266.66
  6. Step 6: Final answer
    x = 267.44

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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.