Finding the Fourth Proportional to 207.89, 286.99 and 163.55
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Solution
The fourth proportional to 207.89, 286.99 and 163.55 is: 225.78
Step by Step Solution
- Step 1: Write the proportion equation
207.89 : 286.99 = 163.55 : x - Step 2: Convert to fraction form
207.89/286.99 = 163.55/x - Step 3: Cross multiply
207.89x = 286.99 × 163.55 - Step 4: Simplify right side
207.89x = 46,937.21 - Step 5: Solve for x
x = 46,937.21/207.89 - Step 6: Final answer
x = 225.78
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.