Finding the Fourth Proportional to 140.19, 209.91 and 132.99
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Solution
The fourth proportional to 140.19, 209.91 and 132.99 is: 199.13
Step by Step Solution
- Step 1: Write the proportion equation
140.19 : 209.91 = 132.99 : x - Step 2: Convert to fraction form
140.19/209.91 = 132.99/x - Step 3: Cross multiply
140.19x = 209.91 × 132.99 - Step 4: Simplify right side
140.19x = 27,915.93 - Step 5: Solve for x
x = 27,915.93/140.19 - Step 6: Final answer
x = 199.13
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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.