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Finding the Fourth Proportional to 266.72, 367.82 and 210.60

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Solution

The fourth proportional to 266.72, 367.82 and 210.60 is: 290.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.72 : 367.82 = 210.60 : x
  2. Step 2: Convert to fraction form
    266.72/367.82 = 210.60/x
  3. Step 3: Cross multiply
    266.72x = 367.82 × 210.60
  4. Step 4: Simplify right side
    266.72x = 77,461.05
  5. Step 5: Solve for x
    x = 77,461.05/266.72
  6. Step 6: Final answer
    x = 290.42

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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.