Finding the Fourth Proportional to 413.26, 619.21 and 207.40
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Solution
The fourth proportional to 413.26, 619.21 and 207.40 is: 310.75
Step by Step Solution
- Step 1: Write the proportion equation
413.26 : 619.21 = 207.40 : x - Step 2: Convert to fraction form
413.26/619.21 = 207.40/x - Step 3: Cross multiply
413.26x = 619.21 × 207.40 - Step 4: Simplify right side
413.26x = 128,422.99 - Step 5: Solve for x
x = 128,422.99/413.26 - Step 6: Final answer
x = 310.75
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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.