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Finding the Fourth Proportional to 350.72, 483.90 and 217.88

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Solution

The fourth proportional to 350.72, 483.90 and 217.88 is: 300.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.72 : 483.90 = 217.88 : x
  2. Step 2: Convert to fraction form
    350.72/483.90 = 217.88/x
  3. Step 3: Cross multiply
    350.72x = 483.90 × 217.88
  4. Step 4: Simplify right side
    350.72x = 105,432.13
  5. Step 5: Solve for x
    x = 105,432.13/350.72
  6. Step 6: Final answer
    x = 300.62

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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.