Finding the Fourth Proportional to 165.96, 249.08 and 84.96
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Solution
The fourth proportional to 165.96, 249.08 and 84.96 is: 127.51
Step by Step Solution
- Step 1: Write the proportion equation
165.96 : 249.08 = 84.96 : x - Step 2: Convert to fraction form
165.96/249.08 = 84.96/x - Step 3: Cross multiply
165.96x = 249.08 × 84.96 - Step 4: Simplify right side
165.96x = 21,161.41 - Step 5: Solve for x
x = 21,161.41/165.96 - Step 6: Final answer
x = 127.51
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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.