Finding the Fourth Proportional to 207.25, 286.01 and 129.63
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Solution
The fourth proportional to 207.25, 286.01 and 129.63 is: 178.89
Step by Step Solution
- Step 1: Write the proportion equation
207.25 : 286.01 = 129.63 : x - Step 2: Convert to fraction form
207.25/286.01 = 129.63/x - Step 3: Cross multiply
207.25x = 286.01 × 129.63 - Step 4: Simplify right side
207.25x = 37,074.83 - Step 5: Solve for x
x = 37,074.83/207.25 - Step 6: Final answer
x = 178.89
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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.