Finding the Fourth Proportional to 388.92, 583.26 and 157.70
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Solution
The fourth proportional to 388.92, 583.26 and 157.70 is: 236.49
Step by Step Solution
- Step 1: Write the proportion equation
388.92 : 583.26 = 157.70 : x - Step 2: Convert to fraction form
388.92/583.26 = 157.70/x - Step 3: Cross multiply
388.92x = 583.26 × 157.70 - Step 4: Simplify right side
388.92x = 91,977.19 - Step 5: Solve for x
x = 91,977.19/388.92 - Step 6: Final answer
x = 236.49
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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.