Finding the Fourth Proportional to 713.75, 984.91 and 398.99
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Solution
The fourth proportional to 713.75, 984.91 and 398.99 is: 550.57
Step by Step Solution
- Step 1: Write the proportion equation
713.75 : 984.91 = 398.99 : x - Step 2: Convert to fraction form
713.75/984.91 = 398.99/x - Step 3: Cross multiply
713.75x = 984.91 × 398.99 - Step 4: Simplify right side
713.75x = 392,963.32 - Step 5: Solve for x
x = 392,963.32/713.75 - Step 6: Final answer
x = 550.57
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.