Finding the Fourth Proportional to 149.99, 206.97 and 84.49
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Solution
The fourth proportional to 149.99, 206.97 and 84.49 is: 116.60
Step by Step Solution
- Step 1: Write the proportion equation
149.99 : 206.97 = 84.49 : x - Step 2: Convert to fraction form
149.99/206.97 = 84.49/x - Step 3: Cross multiply
149.99x = 206.97 × 84.49 - Step 4: Simplify right side
149.99x = 17,487.70 - Step 5: Solve for x
x = 17,487.70/149.99 - Step 6: Final answer
x = 116.60
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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.