Finding the Fourth Proportional to 201.99, 279.05 and 155.55
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Solution
The fourth proportional to 201.99, 279.05 and 155.55 is: 214.89
Step by Step Solution
- Step 1: Write the proportion equation
201.99 : 279.05 = 155.55 : x - Step 2: Convert to fraction form
201.99/279.05 = 155.55/x - Step 3: Cross multiply
201.99x = 279.05 × 155.55 - Step 4: Simplify right side
201.99x = 43,406.23 - Step 5: Solve for x
x = 43,406.23/201.99 - Step 6: Final answer
x = 214.89
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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.