Finding the Fourth Proportional to 207.36, 310.97 and 70.36
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Solution
The fourth proportional to 207.36, 310.97 and 70.36 is: 105.51
Step by Step Solution
- Step 1: Write the proportion equation
207.36 : 310.97 = 70.36 : x - Step 2: Convert to fraction form
207.36/310.97 = 70.36/x - Step 3: Cross multiply
207.36x = 310.97 × 70.36 - Step 4: Simplify right side
207.36x = 21,879.25 - Step 5: Solve for x
x = 21,879.25/207.36 - Step 6: Final answer
x = 105.51
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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.