Finding the Fourth Proportional to 207.54, 311.36 and 70.62
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Solution
The fourth proportional to 207.54, 311.36 and 70.62 is: 105.95
Step by Step Solution
- Step 1: Write the proportion equation
207.54 : 311.36 = 70.62 : x - Step 2: Convert to fraction form
207.54/311.36 = 70.62/x - Step 3: Cross multiply
207.54x = 311.36 × 70.62 - Step 4: Simplify right side
207.54x = 21,988.24 - Step 5: Solve for x
x = 21,988.24/207.54 - Step 6: Final answer
x = 105.95
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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.