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Finding the Fourth Proportional to 604.28, 907.03 and 408.67

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Solution

The fourth proportional to 604.28, 907.03 and 408.67 is: 613.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.28 : 907.03 = 408.67 : x
  2. Step 2: Convert to fraction form
    604.28/907.03 = 408.67/x
  3. Step 3: Cross multiply
    604.28x = 907.03 × 408.67
  4. Step 4: Simplify right side
    604.28x = 370,675.95
  5. Step 5: Solve for x
    x = 370,675.95/604.28
  6. Step 6: Final answer
    x = 613.42

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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.