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Finding the Fourth Proportional to 350.55, 483.71 and 217.80

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Solution

The fourth proportional to 350.55, 483.71 and 217.80 is: 300.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.55 : 483.71 = 217.80 : x
  2. Step 2: Convert to fraction form
    350.55/483.71 = 217.80/x
  3. Step 3: Cross multiply
    350.55x = 483.71 × 217.80
  4. Step 4: Simplify right side
    350.55x = 105,352.04
  5. Step 5: Solve for x
    x = 105,352.04/350.55
  6. Step 6: Final answer
    x = 300.53

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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.