Finding the Fourth Proportional to 207.93, 311.93 and 70.94
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Solution
The fourth proportional to 207.93, 311.93 and 70.94 is: 106.42
Step by Step Solution
- Step 1: Write the proportion equation
207.93 : 311.93 = 70.94 : x - Step 2: Convert to fraction form
207.93/311.93 = 70.94/x - Step 3: Cross multiply
207.93x = 311.93 × 70.94 - Step 4: Simplify right side
207.93x = 22,128.20 - Step 5: Solve for x
x = 22,128.20/207.93 - Step 6: Final answer
x = 106.42
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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.