Finding the Fourth Proportional to 413.20, 618.97 and 207.49
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Solution
The fourth proportional to 413.20, 618.97 and 207.49 is: 310.81
Step by Step Solution
- Step 1: Write the proportion equation
413.20 : 618.97 = 207.49 : x - Step 2: Convert to fraction form
413.20/618.97 = 207.49/x - Step 3: Cross multiply
413.20x = 618.97 × 207.49 - Step 4: Simplify right side
413.20x = 128,427.24 - Step 5: Solve for x
x = 128,427.24/413.20 - Step 6: Final answer
x = 310.81
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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.