Finding the Fourth Proportional to 40.24, 60.31 and 30.09
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Solution
The fourth proportional to 40.24, 60.31 and 30.09 is: 45.09
Step by Step Solution
- Step 1: Write the proportion equation
40.24 : 60.31 = 30.09 : x - Step 2: Convert to fraction form
40.24/60.31 = 30.09/x - Step 3: Cross multiply
40.24x = 60.31 × 30.09 - Step 4: Simplify right side
40.24x = 1,814.58 - Step 5: Solve for x
x = 1,814.58/40.24 - Step 6: Final answer
x = 45.09
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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.