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Finding the Fourth Proportional to 266.08, 367.08 and 155.56

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Solution

The fourth proportional to 266.08, 367.08 and 155.56 is: 214.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.08 : 367.08 = 155.56 : x
  2. Step 2: Convert to fraction form
    266.08/367.08 = 155.56/x
  3. Step 3: Cross multiply
    266.08x = 367.08 × 155.56
  4. Step 4: Simplify right side
    266.08x = 57,102.96
  5. Step 5: Solve for x
    x = 57,102.96/266.08
  6. Step 6: Final answer
    x = 214.61

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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.