Finding the Fourth Proportional to 201.64, 278.04 and 170.68
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Solution
The fourth proportional to 201.64, 278.04 and 170.68 is: 235.35
Step by Step Solution
- Step 1: Write the proportion equation
201.64 : 278.04 = 170.68 : x - Step 2: Convert to fraction form
201.64/278.04 = 170.68/x - Step 3: Cross multiply
201.64x = 278.04 × 170.68 - Step 4: Simplify right side
201.64x = 47,455.87 - Step 5: Solve for x
x = 47,455.87/201.64 - Step 6: Final answer
x = 235.35
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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.