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Finding the Fourth Proportional to 349.44, 521.94 and 300.84

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Solution

The fourth proportional to 349.44, 521.94 and 300.84 is: 449.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.44 : 521.94 = 300.84 : x
  2. Step 2: Convert to fraction form
    349.44/521.94 = 300.84/x
  3. Step 3: Cross multiply
    349.44x = 521.94 × 300.84
  4. Step 4: Simplify right side
    349.44x = 157,020.43
  5. Step 5: Solve for x
    x = 157,020.43/349.44
  6. Step 6: Final answer
    x = 449.35

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.