Finding the Fourth Proportional to 202.81, 279.70 and 171.70
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Solution
The fourth proportional to 202.81, 279.70 and 171.70 is: 236.80
Step by Step Solution
- Step 1: Write the proportion equation
202.81 : 279.70 = 171.70 : x - Step 2: Convert to fraction form
202.81/279.70 = 171.70/x - Step 3: Cross multiply
202.81x = 279.70 × 171.70 - Step 4: Simplify right side
202.81x = 48,024.49 - Step 5: Solve for x
x = 48,024.49/202.81 - Step 6: Final answer
x = 236.80
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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.