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Finding the Fourth Proportional to 412.21, 619.00 and 344.26

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Solution

The fourth proportional to 412.21, 619.00 and 344.26 is: 516.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    412.21 : 619.00 = 344.26 : x
  2. Step 2: Convert to fraction form
    412.21/619.00 = 344.26/x
  3. Step 3: Cross multiply
    412.21x = 619.00 × 344.26
  4. Step 4: Simplify right side
    412.21x = 213,094.53
  5. Step 5: Solve for x
    x = 213,094.53/412.21
  6. Step 6: Final answer
    x = 516.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.