Finding the Fourth Proportional to 202.22, 278.99 and 139.97
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Solution
The fourth proportional to 202.22, 278.99 and 139.97 is: 193.12
Step by Step Solution
- Step 1: Write the proportion equation
202.22 : 278.99 = 139.97 : x - Step 2: Convert to fraction form
202.22/278.99 = 139.97/x - Step 3: Cross multiply
202.22x = 278.99 × 139.97 - Step 4: Simplify right side
202.22x = 39,051.28 - Step 5: Solve for x
x = 39,051.28/202.22 - Step 6: Final answer
x = 193.12
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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.