Finding the Fourth Proportional to 207.74, 286.26 and 202.07
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Solution
The fourth proportional to 207.74, 286.26 and 202.07 is: 278.45
Step by Step Solution
- Step 1: Write the proportion equation
207.74 : 286.26 = 202.07 : x - Step 2: Convert to fraction form
207.74/286.26 = 202.07/x - Step 3: Cross multiply
207.74x = 286.26 × 202.07 - Step 4: Simplify right side
207.74x = 57,844.56 - Step 5: Solve for x
x = 57,844.56/207.74 - Step 6: Final answer
x = 278.45
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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.