Finding the Fourth Proportional to 207.70, 310.63 and 125.99
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Solution
The fourth proportional to 207.70, 310.63 and 125.99 is: 188.43
Step by Step Solution
- Step 1: Write the proportion equation
207.70 : 310.63 = 125.99 : x - Step 2: Convert to fraction form
207.70/310.63 = 125.99/x - Step 3: Cross multiply
207.70x = 310.63 × 125.99 - Step 4: Simplify right side
207.70x = 39,135.64 - Step 5: Solve for x
x = 39,135.64/207.70 - Step 6: Final answer
x = 188.43
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.