Finding the Fourth Proportional to 207.63, 286.65 and 145.44
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Solution
The fourth proportional to 207.63, 286.65 and 145.44 is: 200.79
Step by Step Solution
- Step 1: Write the proportion equation
207.63 : 286.65 = 145.44 : x - Step 2: Convert to fraction form
207.63/286.65 = 145.44/x - Step 3: Cross multiply
207.63x = 286.65 × 145.44 - Step 4: Simplify right side
207.63x = 41,690.38 - Step 5: Solve for x
x = 41,690.38/207.63 - Step 6: Final answer
x = 200.79
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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.