Finding the Fourth Proportional to 101.99, 140.74 and 84.44
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Solution
The fourth proportional to 101.99, 140.74 and 84.44 is: 116.52
Step by Step Solution
- Step 1: Write the proportion equation
101.99 : 140.74 = 84.44 : x - Step 2: Convert to fraction form
101.99/140.74 = 84.44/x - Step 3: Cross multiply
101.99x = 140.74 × 84.44 - Step 4: Simplify right side
101.99x = 11,884.23 - Step 5: Solve for x
x = 11,884.23/101.99 - Step 6: Final answer
x = 116.52
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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.