Finding the Fourth Proportional to 202.23, 279.21 and 143.23
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Solution
The fourth proportional to 202.23, 279.21 and 143.23 is: 197.75
Step by Step Solution
- Step 1: Write the proportion equation
202.23 : 279.21 = 143.23 : x - Step 2: Convert to fraction form
202.23/279.21 = 143.23/x - Step 3: Cross multiply
202.23x = 279.21 × 143.23 - Step 4: Simplify right side
202.23x = 39,991.25 - Step 5: Solve for x
x = 39,991.25/202.23 - Step 6: Final answer
x = 197.75
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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.