Finding the Fourth Proportional to 207.73, 286.55 and 129.02
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Solution
The fourth proportional to 207.73, 286.55 and 129.02 is: 177.98
Step by Step Solution
- Step 1: Write the proportion equation
207.73 : 286.55 = 129.02 : x - Step 2: Convert to fraction form
207.73/286.55 = 129.02/x - Step 3: Cross multiply
207.73x = 286.55 × 129.02 - Step 4: Simplify right side
207.73x = 36,971.00 - Step 5: Solve for x
x = 36,971.00/207.73 - Step 6: Final answer
x = 177.98
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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.