Finding the Fourth Proportional to 149.48, 206.26 and 83.99
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Solution
The fourth proportional to 149.48, 206.26 and 83.99 is: 115.89
Step by Step Solution
- Step 1: Write the proportion equation
149.48 : 206.26 = 83.99 : x - Step 2: Convert to fraction form
149.48/206.26 = 83.99/x - Step 3: Cross multiply
149.48x = 206.26 × 83.99 - Step 4: Simplify right side
149.48x = 17,323.40 - Step 5: Solve for x
x = 17,323.40/149.48 - Step 6: Final answer
x = 115.89
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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.