Finding the Fourth Proportional to 202.99, 280.12 and 115.66
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Solution
The fourth proportional to 202.99, 280.12 and 115.66 is: 159.60
Step by Step Solution
- Step 1: Write the proportion equation
202.99 : 280.12 = 115.66 : x - Step 2: Convert to fraction form
202.99/280.12 = 115.66/x - Step 3: Cross multiply
202.99x = 280.12 × 115.66 - Step 4: Simplify right side
202.99x = 32,397.98 - Step 5: Solve for x
x = 32,397.98/202.99 - Step 6: Final answer
x = 159.60
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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.