Finding the Fourth Proportional to 202.99, 280.30 and 140.80
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Solution
The fourth proportional to 202.99, 280.30 and 140.80 is: 194.42
Step by Step Solution
- Step 1: Write the proportion equation
202.99 : 280.30 = 140.80 : x - Step 2: Convert to fraction form
202.99/280.30 = 140.80/x - Step 3: Cross multiply
202.99x = 280.30 × 140.80 - Step 4: Simplify right side
202.99x = 39,466.24 - Step 5: Solve for x
x = 39,466.24/202.99 - Step 6: Final answer
x = 194.42
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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.