Finding the Fourth Proportional to 45.21, 67.72 and 29.99
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Solution
The fourth proportional to 45.21, 67.72 and 29.99 is: 44.92
Step by Step Solution
- Step 1: Write the proportion equation
45.21 : 67.72 = 29.99 : x - Step 2: Convert to fraction form
45.21/67.72 = 29.99/x - Step 3: Cross multiply
45.21x = 67.72 × 29.99 - Step 4: Simplify right side
45.21x = 2,030.92 - Step 5: Solve for x
x = 2,030.92/45.21 - Step 6: Final answer
x = 44.92
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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.