Finding the Fourth Proportional to 207.81, 286.74 and 118.08
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Solution
The fourth proportional to 207.81, 286.74 and 118.08 is: 162.93
Step by Step Solution
- Step 1: Write the proportion equation
207.81 : 286.74 = 118.08 : x - Step 2: Convert to fraction form
207.81/286.74 = 118.08/x - Step 3: Cross multiply
207.81x = 286.74 × 118.08 - Step 4: Simplify right side
207.81x = 33,858.26 - Step 5: Solve for x
x = 33,858.26/207.81 - Step 6: Final answer
x = 162.93
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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.