Finding the Fourth Proportional to 202.43, 278.84 and 188.99
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Solution
The fourth proportional to 202.43, 278.84 and 188.99 is: 260.32
Step by Step Solution
- Step 1: Write the proportion equation
202.43 : 278.84 = 188.99 : x - Step 2: Convert to fraction form
202.43/278.84 = 188.99/x - Step 3: Cross multiply
202.43x = 278.84 × 188.99 - Step 4: Simplify right side
202.43x = 52,697.03 - Step 5: Solve for x
x = 52,697.03/202.43 - Step 6: Final answer
x = 260.32
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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.