Finding the Fourth Proportional to 63.77, 87.99 and 36.14
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Solution
The fourth proportional to 63.77, 87.99 and 36.14 is: 49.87
Step by Step Solution
- Step 1: Write the proportion equation
63.77 : 87.99 = 36.14 : x - Step 2: Convert to fraction form
63.77/87.99 = 36.14/x - Step 3: Cross multiply
63.77x = 87.99 × 36.14 - Step 4: Simplify right side
63.77x = 3,179.96 - Step 5: Solve for x
x = 3,179.96/63.77 - Step 6: Final answer
x = 49.87
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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.