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Finding the Fourth Proportional to 404.40, 607.23 and 323.94

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Solution

The fourth proportional to 404.40, 607.23 and 323.94 is: 486.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.40 : 607.23 = 323.94 : x
  2. Step 2: Convert to fraction form
    404.40/607.23 = 323.94/x
  3. Step 3: Cross multiply
    404.40x = 607.23 × 323.94
  4. Step 4: Simplify right side
    404.40x = 196,706.09
  5. Step 5: Solve for x
    x = 196,706.09/404.40
  6. Step 6: Final answer
    x = 486.41

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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.