Finding the Fourth Proportional to 206.97, 310.35 and 69.99
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Solution
The fourth proportional to 206.97, 310.35 and 69.99 is: 104.95
Step by Step Solution
- Step 1: Write the proportion equation
206.97 : 310.35 = 69.99 : x - Step 2: Convert to fraction form
206.97/310.35 = 69.99/x - Step 3: Cross multiply
206.97x = 310.35 × 69.99 - Step 4: Simplify right side
206.97x = 21,721.40 - Step 5: Solve for x
x = 21,721.40/206.97 - Step 6: Final answer
x = 104.95
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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.