Finding the Fourth Proportional to 78.99, 109.01 and 44.02
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Solution
The fourth proportional to 78.99, 109.01 and 44.02 is: 60.75
Step by Step Solution
- Step 1: Write the proportion equation
78.99 : 109.01 = 44.02 : x - Step 2: Convert to fraction form
78.99/109.01 = 44.02/x - Step 3: Cross multiply
78.99x = 109.01 × 44.02 - Step 4: Simplify right side
78.99x = 4,798.40 - Step 5: Solve for x
x = 4,798.40/78.99 - Step 6: Final answer
x = 60.75
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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.