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Finding the Fourth Proportional to 476.07, 713.37 and 321.39

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Solution

The fourth proportional to 476.07, 713.37 and 321.39 is: 481.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.07 : 713.37 = 321.39 : x
  2. Step 2: Convert to fraction form
    476.07/713.37 = 321.39/x
  3. Step 3: Cross multiply
    476.07x = 713.37 × 321.39
  4. Step 4: Simplify right side
    476.07x = 229,269.98
  5. Step 5: Solve for x
    x = 229,269.98/476.07
  6. Step 6: Final answer
    x = 481.59

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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.