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Finding the Fourth Proportional to 266.95, 367.95 and 217.99

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Solution

The fourth proportional to 266.95, 367.95 and 217.99 is: 300.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.95 : 367.95 = 217.99 : x
  2. Step 2: Convert to fraction form
    266.95/367.95 = 217.99/x
  3. Step 3: Cross multiply
    266.95x = 367.95 × 217.99
  4. Step 4: Simplify right side
    266.95x = 80,209.42
  5. Step 5: Solve for x
    x = 80,209.42/266.95
  6. Step 6: Final answer
    x = 300.47

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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.