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Finding the Fourth Proportional to 266.27, 367.49 and 155.80

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Solution

The fourth proportional to 266.27, 367.49 and 155.80 is: 215.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.27 : 367.49 = 155.80 : x
  2. Step 2: Convert to fraction form
    266.27/367.49 = 155.80/x
  3. Step 3: Cross multiply
    266.27x = 367.49 × 155.80
  4. Step 4: Simplify right side
    266.27x = 57,254.41
  5. Step 5: Solve for x
    x = 57,254.41/266.27
  6. Step 6: Final answer
    x = 215.03

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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.