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Finding the Fourth Proportional to 348.99, 481.63 and 218.01

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Solution

The fourth proportional to 348.99, 481.63 and 218.01 is: 300.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.99 : 481.63 = 218.01 : x
  2. Step 2: Convert to fraction form
    348.99/481.63 = 218.01/x
  3. Step 3: Cross multiply
    348.99x = 481.63 × 218.01
  4. Step 4: Simplify right side
    348.99x = 105,000.16
  5. Step 5: Solve for x
    x = 105,000.16/348.99
  6. Step 6: Final answer
    x = 300.87

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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.