Finding the Fourth Proportional to 149.99, 206.99 and 84.51
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Solution
The fourth proportional to 149.99, 206.99 and 84.51 is: 116.63
Step by Step Solution
- Step 1: Write the proportion equation
149.99 : 206.99 = 84.51 : x - Step 2: Convert to fraction form
149.99/206.99 = 84.51/x - Step 3: Cross multiply
149.99x = 206.99 × 84.51 - Step 4: Simplify right side
149.99x = 17,492.62 - Step 5: Solve for x
x = 17,492.62/149.99 - Step 6: Final answer
x = 116.63
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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.