Finding the Fourth Proportional to 207.40, 286.08 and 133.68
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Solution
The fourth proportional to 207.40, 286.08 and 133.68 is: 184.39
Step by Step Solution
- Step 1: Write the proportion equation
207.40 : 286.08 = 133.68 : x - Step 2: Convert to fraction form
207.40/286.08 = 133.68/x - Step 3: Cross multiply
207.40x = 286.08 × 133.68 - Step 4: Simplify right side
207.40x = 38,243.17 - Step 5: Solve for x
x = 38,243.17/207.40 - Step 6: Final answer
x = 184.39
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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.