Finding the Fourth Proportional to 207.91, 286.99 and 125.05
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Solution
The fourth proportional to 207.91, 286.99 and 125.05 is: 172.61
Step by Step Solution
- Step 1: Write the proportion equation
207.91 : 286.99 = 125.05 : x - Step 2: Convert to fraction form
207.91/286.99 = 125.05/x - Step 3: Cross multiply
207.91x = 286.99 × 125.05 - Step 4: Simplify right side
207.91x = 35,886.66 - Step 5: Solve for x
x = 35,886.66/207.91 - Step 6: Final answer
x = 172.61
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.