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Finding the Fourth Proportional to 413.96, 623.34 and 299.19

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Solution

The fourth proportional to 413.96, 623.34 and 299.19 is: 450.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    413.96 : 623.34 = 299.19 : x
  2. Step 2: Convert to fraction form
    413.96/623.34 = 299.19/x
  3. Step 3: Cross multiply
    413.96x = 623.34 × 299.19
  4. Step 4: Simplify right side
    413.96x = 186,493.98
  5. Step 5: Solve for x
    x = 186,493.98/413.96
  6. Step 6: Final answer
    x = 450.51

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.