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Finding the Fourth Proportional to 347.84, 480.11 and 216.80

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Solution

The fourth proportional to 347.84, 480.11 and 216.80 is: 299.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.84 : 480.11 = 216.80 : x
  2. Step 2: Convert to fraction form
    347.84/480.11 = 216.80/x
  3. Step 3: Cross multiply
    347.84x = 480.11 × 216.80
  4. Step 4: Simplify right side
    347.84x = 104,087.85
  5. Step 5: Solve for x
    x = 104,087.85/347.84
  6. Step 6: Final answer
    x = 299.24

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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.