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Finding the Fourth Proportional to 266.54, 397.65 and 223.48

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Solution

The fourth proportional to 266.54, 397.65 and 223.48 is: 333.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.54 : 397.65 = 223.48 : x
  2. Step 2: Convert to fraction form
    266.54/397.65 = 223.48/x
  3. Step 3: Cross multiply
    266.54x = 397.65 × 223.48
  4. Step 4: Simplify right side
    266.54x = 88,867.70
  5. Step 5: Solve for x
    x = 88,867.70/266.54
  6. Step 6: Final answer
    x = 333.41

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.