Finding the Fourth Proportional to 276.25, 413.77 and 260.09
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Solution
The fourth proportional to 276.25, 413.77 and 260.09 is: 389.57
Step by Step Solution
- Step 1: Write the proportion equation
276.25 : 413.77 = 260.09 : x - Step 2: Convert to fraction form
276.25/413.77 = 260.09/x - Step 3: Cross multiply
276.25x = 413.77 × 260.09 - Step 4: Simplify right side
276.25x = 107,617.44 - Step 5: Solve for x
x = 107,617.44/276.25 - Step 6: Final answer
x = 389.57
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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.