Finding the Fourth Proportional to 68.80, 102.99 and 63.94
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Solution
The fourth proportional to 68.80, 102.99 and 63.94 is: 95.71
Step by Step Solution
- Step 1: Write the proportion equation
68.80 : 102.99 = 63.94 : x - Step 2: Convert to fraction form
68.80/102.99 = 63.94/x - Step 3: Cross multiply
68.80x = 102.99 × 63.94 - Step 4: Simplify right side
68.80x = 6,585.18 - Step 5: Solve for x
x = 6,585.18/68.80 - Step 6: Final answer
x = 95.71
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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.