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Finding the Fourth Proportional to 350.45, 484.10 and 304.43

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Solution

The fourth proportional to 350.45, 484.10 and 304.43 is: 420.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.45 : 484.10 = 304.43 : x
  2. Step 2: Convert to fraction form
    350.45/484.10 = 304.43/x
  3. Step 3: Cross multiply
    350.45x = 484.10 × 304.43
  4. Step 4: Simplify right side
    350.45x = 147,376.70
  5. Step 5: Solve for x
    x = 147,376.70/350.45
  6. Step 6: Final answer
    x = 420.53

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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.