Finding the Fourth Proportional to 40.56, 60.80 and 19.99
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Solution
The fourth proportional to 40.56, 60.80 and 19.99 is: 29.96
Step by Step Solution
- Step 1: Write the proportion equation
40.56 : 60.80 = 19.99 : x - Step 2: Convert to fraction form
40.56/60.80 = 19.99/x - Step 3: Cross multiply
40.56x = 60.80 × 19.99 - Step 4: Simplify right side
40.56x = 1,215.09 - Step 5: Solve for x
x = 1,215.09/40.56 - Step 6: Final answer
x = 29.96
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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.