Finding the Fourth Proportional to 68.60, 102.36 and 68.08
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Solution
The fourth proportional to 68.60, 102.36 and 68.08 is: 101.58
Step by Step Solution
- Step 1: Write the proportion equation
68.60 : 102.36 = 68.08 : x - Step 2: Convert to fraction form
68.60/102.36 = 68.08/x - Step 3: Cross multiply
68.60x = 102.36 × 68.08 - Step 4: Simplify right side
68.60x = 6,968.67 - Step 5: Solve for x
x = 6,968.67/68.60 - Step 6: Final answer
x = 101.58
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.