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Finding the Fourth Proportional to 348.98, 481.55 and 266.09

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Solution

The fourth proportional to 348.98, 481.55 and 266.09 is: 367.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.98 : 481.55 = 266.09 : x
  2. Step 2: Convert to fraction form
    348.98/481.55 = 266.09/x
  3. Step 3: Cross multiply
    348.98x = 481.55 × 266.09
  4. Step 4: Simplify right side
    348.98x = 128,131.90
  5. Step 5: Solve for x
    x = 128,131.90/348.98
  6. Step 6: Final answer
    x = 367.17

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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.