Finding the Fourth Proportional to 56.31, 77.71 and 32.99
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Solution
The fourth proportional to 56.31, 77.71 and 32.99 is: 45.53
Step by Step Solution
- Step 1: Write the proportion equation
56.31 : 77.71 = 32.99 : x - Step 2: Convert to fraction form
56.31/77.71 = 32.99/x - Step 3: Cross multiply
56.31x = 77.71 × 32.99 - Step 4: Simplify right side
56.31x = 2,563.85 - Step 5: Solve for x
x = 2,563.85/56.31 - Step 6: Final answer
x = 45.53
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.