Finding the Fourth Proportional to 207.63, 311.36 and 70.65
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Solution
The fourth proportional to 207.63, 311.36 and 70.65 is: 105.94
Step by Step Solution
- Step 1: Write the proportion equation
207.63 : 311.36 = 70.65 : x - Step 2: Convert to fraction form
207.63/311.36 = 70.65/x - Step 3: Cross multiply
207.63x = 311.36 × 70.65 - Step 4: Simplify right side
207.63x = 21,997.23 - Step 5: Solve for x
x = 21,997.23/207.63 - Step 6: Final answer
x = 105.94
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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.