Finding the Fourth Proportional to 66.63, 92.00 and 47.00
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Solution
The fourth proportional to 66.63, 92.00 and 47.00 is: 64.89
Step by Step Solution
- Step 1: Write the proportion equation
66.63 : 92.00 = 47.00 : x - Step 2: Convert to fraction form
66.63/92.00 = 47.00/x - Step 3: Cross multiply
66.63x = 92.00 × 47.00 - Step 4: Simplify right side
66.63x = 4,323.31 - Step 5: Solve for x
x = 4,323.31/66.63 - Step 6: Final answer
x = 64.89
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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.