Finding the Fourth Proportional to 45.80, 68.72 and 43.98
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Solution
The fourth proportional to 45.80, 68.72 and 43.98 is: 65.99
Step by Step Solution
- Step 1: Write the proportion equation
45.80 : 68.72 = 43.98 : x - Step 2: Convert to fraction form
45.80/68.72 = 43.98/x - Step 3: Cross multiply
45.80x = 68.72 × 43.98 - Step 4: Simplify right side
45.80x = 3,022.31 - Step 5: Solve for x
x = 3,022.31/45.80 - Step 6: Final answer
x = 65.99
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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.