Finding the Fourth Proportional to 68.25, 94.08 and 63.66
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Solution
The fourth proportional to 68.25, 94.08 and 63.66 is: 87.75
Step by Step Solution
- Step 1: Write the proportion equation
68.25 : 94.08 = 63.66 : x - Step 2: Convert to fraction form
68.25/94.08 = 63.66/x - Step 3: Cross multiply
68.25x = 94.08 × 63.66 - Step 4: Simplify right side
68.25x = 5,989.13 - Step 5: Solve for x
x = 5,989.13/68.25 - Step 6: Final answer
x = 87.75
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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.