Finding the Fourth Proportional to 202.68, 279.70 and 119.81
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Solution
The fourth proportional to 202.68, 279.70 and 119.81 is: 165.34
Step by Step Solution
- Step 1: Write the proportion equation
202.68 : 279.70 = 119.81 : x - Step 2: Convert to fraction form
202.68/279.70 = 119.81/x - Step 3: Cross multiply
202.68x = 279.70 × 119.81 - Step 4: Simplify right side
202.68x = 33,511.26 - Step 5: Solve for x
x = 33,511.26/202.68 - Step 6: Final answer
x = 165.34
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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.