Finding the Fourth Proportional to 53.58, 73.86 and 40.62
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Solution
The fourth proportional to 53.58, 73.86 and 40.62 is: 55.99
Step by Step Solution
- Step 1: Write the proportion equation
53.58 : 73.86 = 40.62 : x - Step 2: Convert to fraction form
53.58/73.86 = 40.62/x - Step 3: Cross multiply
53.58x = 73.86 × 40.62 - Step 4: Simplify right side
53.58x = 3,000.19 - Step 5: Solve for x
x = 3,000.19/53.58 - Step 6: Final answer
x = 55.99
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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.