Finding the Fourth Proportional to 40.68, 60.84 and 30.48
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Solution
The fourth proportional to 40.68, 60.84 and 30.48 is: 45.59
Step by Step Solution
- Step 1: Write the proportion equation
40.68 : 60.84 = 30.48 : x - Step 2: Convert to fraction form
40.68/60.84 = 30.48/x - Step 3: Cross multiply
40.68x = 60.84 × 30.48 - Step 4: Simplify right side
40.68x = 1,854.40 - Step 5: Solve for x
x = 1,854.40/40.68 - Step 6: Final answer
x = 45.59
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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.