Finding the Fourth Proportional to 275.99, 413.99 and 81.01
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Solution
The fourth proportional to 275.99, 413.99 and 81.01 is: 121.52
Step by Step Solution
- Step 1: Write the proportion equation
275.99 : 413.99 = 81.01 : x - Step 2: Convert to fraction form
275.99/413.99 = 81.01/x - Step 3: Cross multiply
275.99x = 413.99 × 81.01 - Step 4: Simplify right side
275.99x = 33,537.33 - Step 5: Solve for x
x = 33,537.33/275.99 - Step 6: Final answer
x = 121.52
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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.