Finding the Fourth Proportional to 83.14, 124.18 and 69.62
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Solution
The fourth proportional to 83.14, 124.18 and 69.62 is: 103.99
Step by Step Solution
- Step 1: Write the proportion equation
83.14 : 124.18 = 69.62 : x - Step 2: Convert to fraction form
83.14/124.18 = 69.62/x - Step 3: Cross multiply
83.14x = 124.18 × 69.62 - Step 4: Simplify right side
83.14x = 8,645.41 - Step 5: Solve for x
x = 8,645.41/83.14 - Step 6: Final answer
x = 103.99
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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.