Finding the Fourth Proportional to 207.76, 286.38 and 193.98
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Solution
The fourth proportional to 207.76, 286.38 and 193.98 is: 267.39
Step by Step Solution
- Step 1: Write the proportion equation
207.76 : 286.38 = 193.98 : x - Step 2: Convert to fraction form
207.76/286.38 = 193.98/x - Step 3: Cross multiply
207.76x = 286.38 × 193.98 - Step 4: Simplify right side
207.76x = 55,551.99 - Step 5: Solve for x
x = 55,551.99/207.76 - Step 6: Final answer
x = 267.39
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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.