Finding the Fourth Proportional to 227.12, 313.36 and 157.20
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Solution
The fourth proportional to 227.12, 313.36 and 157.20 is: 216.89
Step by Step Solution
- Step 1: Write the proportion equation
227.12 : 313.36 = 157.20 : x - Step 2: Convert to fraction form
227.12/313.36 = 157.20/x - Step 3: Cross multiply
227.12x = 313.36 × 157.20 - Step 4: Simplify right side
227.12x = 49,260.19 - Step 5: Solve for x
x = 49,260.19/227.12 - Step 6: Final answer
x = 216.89
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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.