Finding the Fourth Proportional to 70.23, 104.68 and 69.99
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Solution
The fourth proportional to 70.23, 104.68 and 69.99 is: 104.32
Step by Step Solution
- Step 1: Write the proportion equation
70.23 : 104.68 = 69.99 : x - Step 2: Convert to fraction form
70.23/104.68 = 69.99/x - Step 3: Cross multiply
70.23x = 104.68 × 69.99 - Step 4: Simplify right side
70.23x = 7,326.38 - Step 5: Solve for x
x = 7,326.38/70.23 - Step 6: Final answer
x = 104.32
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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.