Finding the Fourth Proportional to 207.91, 286.95 and 142.36
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Solution
The fourth proportional to 207.91, 286.95 and 142.36 is: 196.48
Step by Step Solution
- Step 1: Write the proportion equation
207.91 : 286.95 = 142.36 : x - Step 2: Convert to fraction form
207.91/286.95 = 142.36/x - Step 3: Cross multiply
207.91x = 286.95 × 142.36 - Step 4: Simplify right side
207.91x = 40,850.20 - Step 5: Solve for x
x = 40,850.20/207.91 - Step 6: Final answer
x = 196.48
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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.