Finding the Fourth Proportional to 207.30, 310.36 and 115.66
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Solution
The fourth proportional to 207.30, 310.36 and 115.66 is: 173.16
Step by Step Solution
- Step 1: Write the proportion equation
207.30 : 310.36 = 115.66 : x - Step 2: Convert to fraction form
207.30/310.36 = 115.66/x - Step 3: Cross multiply
207.30x = 310.36 × 115.66 - Step 4: Simplify right side
207.30x = 35,896.24 - Step 5: Solve for x
x = 35,896.24/207.30 - Step 6: Final answer
x = 173.16
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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.