Finding the Fourth Proportional to 63.21, 87.16 and 46.79
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Solution
The fourth proportional to 63.21, 87.16 and 46.79 is: 64.52
Step by Step Solution
- Step 1: Write the proportion equation
63.21 : 87.16 = 46.79 : x - Step 2: Convert to fraction form
63.21/87.16 = 46.79/x - Step 3: Cross multiply
63.21x = 87.16 × 46.79 - Step 4: Simplify right side
63.21x = 4,078.22 - Step 5: Solve for x
x = 4,078.22/63.21 - Step 6: Final answer
x = 64.52
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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.