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Finding the Fourth Proportional to 345.04, 516.84 and 321.36

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Solution

The fourth proportional to 345.04, 516.84 and 321.36 is: 481.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.04 : 516.84 = 321.36 : x
  2. Step 2: Convert to fraction form
    345.04/516.84 = 321.36/x
  3. Step 3: Cross multiply
    345.04x = 516.84 × 321.36
  4. Step 4: Simplify right side
    345.04x = 166,091.70
  5. Step 5: Solve for x
    x = 166,091.70/345.04
  6. Step 6: Final answer
    x = 481.37

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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.