Finding the Fourth Proportional to 413.80, 571.08 and 239.14
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Solution
The fourth proportional to 413.80, 571.08 and 239.14 is: 330.03
Step by Step Solution
- Step 1: Write the proportion equation
413.80 : 571.08 = 239.14 : x - Step 2: Convert to fraction form
413.80/571.08 = 239.14/x - Step 3: Cross multiply
413.80x = 571.08 × 239.14 - Step 4: Simplify right side
413.80x = 136,568.07 - Step 5: Solve for x
x = 136,568.07/413.80 - Step 6: Final answer
x = 330.03
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.