Finding the Fourth Proportional to 63.18, 94.80 and 42.84
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Solution
The fourth proportional to 63.18, 94.80 and 42.84 is: 64.28
Step by Step Solution
- Step 1: Write the proportion equation
63.18 : 94.80 = 42.84 : x - Step 2: Convert to fraction form
63.18/94.80 = 42.84/x - Step 3: Cross multiply
63.18x = 94.80 × 42.84 - Step 4: Simplify right side
63.18x = 4,061.23 - Step 5: Solve for x
x = 4,061.23/63.18 - Step 6: Final answer
x = 64.28
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.