Finding the Fourth Proportional to 202.55, 279.49 and 119.64
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Solution
The fourth proportional to 202.55, 279.49 and 119.64 is: 165.09
Step by Step Solution
- Step 1: Write the proportion equation
202.55 : 279.49 = 119.64 : x - Step 2: Convert to fraction form
202.55/279.49 = 119.64/x - Step 3: Cross multiply
202.55x = 279.49 × 119.64 - Step 4: Simplify right side
202.55x = 33,438.18 - Step 5: Solve for x
x = 33,438.18/202.55 - Step 6: Final answer
x = 165.09
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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.