Finding the Fourth Proportional to 207.77, 286.91 and 134.21
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Solution
The fourth proportional to 207.77, 286.91 and 134.21 is: 185.33
Step by Step Solution
- Step 1: Write the proportion equation
207.77 : 286.91 = 134.21 : x - Step 2: Convert to fraction form
207.77/286.91 = 134.21/x - Step 3: Cross multiply
207.77x = 286.91 × 134.21 - Step 4: Simplify right side
207.77x = 38,506.19 - Step 5: Solve for x
x = 38,506.19/207.77 - Step 6: Final answer
x = 185.33
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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.