Finding the Fourth Proportional to 207.45, 285.99 and 163.71
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Solution
The fourth proportional to 207.45, 285.99 and 163.71 is: 225.69
Step by Step Solution
- Step 1: Write the proportion equation
207.45 : 285.99 = 163.71 : x - Step 2: Convert to fraction form
207.45/285.99 = 163.71/x - Step 3: Cross multiply
207.45x = 285.99 × 163.71 - Step 4: Simplify right side
207.45x = 46,819.42 - Step 5: Solve for x
x = 46,819.42/207.45 - Step 6: Final answer
x = 225.69
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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.