Finding the Fourth Proportional to 208.76, 312.99 and 157.73
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Solution
The fourth proportional to 208.76, 312.99 and 157.73 is: 236.48
Step by Step Solution
- Step 1: Write the proportion equation
208.76 : 312.99 = 157.73 : x - Step 2: Convert to fraction form
208.76/312.99 = 157.73/x - Step 3: Cross multiply
208.76x = 312.99 × 157.73 - Step 4: Simplify right side
208.76x = 49,366.35 - Step 5: Solve for x
x = 49,366.35/208.76 - Step 6: Final answer
x = 236.48
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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.