Finding the Fourth Proportional to 207.68, 286.57 and 124.75
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Solution
The fourth proportional to 207.68, 286.57 and 124.75 is: 172.14
Step by Step Solution
- Step 1: Write the proportion equation
207.68 : 286.57 = 124.75 : x - Step 2: Convert to fraction form
207.68/286.57 = 124.75/x - Step 3: Cross multiply
207.68x = 286.57 × 124.75 - Step 4: Simplify right side
207.68x = 35,750.12 - Step 5: Solve for x
x = 35,750.12/207.68 - Step 6: Final answer
x = 172.14
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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.