Finding the Fourth Proportional to 202.12, 278.87 and 119.19
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Solution
The fourth proportional to 202.12, 278.87 and 119.19 is: 164.45
Step by Step Solution
- Step 1: Write the proportion equation
202.12 : 278.87 = 119.19 : x - Step 2: Convert to fraction form
202.12/278.87 = 119.19/x - Step 3: Cross multiply
202.12x = 278.87 × 119.19 - Step 4: Simplify right side
202.12x = 33,238.81 - Step 5: Solve for x
x = 33,238.81/202.12 - Step 6: Final answer
x = 164.45
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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.