Finding the Fourth Proportional to 202.13, 302.85 and 136.99
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Solution
The fourth proportional to 202.13, 302.85 and 136.99 is: 205.25
Step by Step Solution
- Step 1: Write the proportion equation
202.13 : 302.85 = 136.99 : x - Step 2: Convert to fraction form
202.13/302.85 = 136.99/x - Step 3: Cross multiply
202.13x = 302.85 × 136.99 - Step 4: Simplify right side
202.13x = 41,487.42 - Step 5: Solve for x
x = 41,487.42/202.13 - Step 6: Final answer
x = 205.25
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.