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Finding the Fourth Proportional to 633.35, 949.32 and 413.39

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Solution

The fourth proportional to 633.35, 949.32 and 413.39 is: 619.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.35 : 949.32 = 413.39 : x
  2. Step 2: Convert to fraction form
    633.35/949.32 = 413.39/x
  3. Step 3: Cross multiply
    633.35x = 949.32 × 413.39
  4. Step 4: Simplify right side
    633.35x = 392,434.65
  5. Step 5: Solve for x
    x = 392,434.65/633.35
  6. Step 6: Final answer
    x = 619.62

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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.