Finding the Fourth Proportional to 68.24, 102.87 and 63.99
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Solution
The fourth proportional to 68.24, 102.87 and 63.99 is: 96.46
Step by Step Solution
- Step 1: Write the proportion equation
68.24 : 102.87 = 63.99 : x - Step 2: Convert to fraction form
68.24/102.87 = 63.99/x - Step 3: Cross multiply
68.24x = 102.87 × 63.99 - Step 4: Simplify right side
68.24x = 6,582.65 - Step 5: Solve for x
x = 6,582.65/68.24 - Step 6: Final answer
x = 96.46
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.