Finding the Fourth Proportional to 207.56, 286.44 and 137.68
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Solution
The fourth proportional to 207.56, 286.44 and 137.68 is: 190.00
Step by Step Solution
- Step 1: Write the proportion equation
207.56 : 286.44 = 137.68 : x - Step 2: Convert to fraction form
207.56/286.44 = 137.68/x - Step 3: Cross multiply
207.56x = 286.44 × 137.68 - Step 4: Simplify right side
207.56x = 39,437.06 - Step 5: Solve for x
x = 39,437.06/207.56 - Step 6: Final answer
x = 190.00
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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.