Finding the Fourth Proportional to 73.49, 101.30 and 57.09
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Solution
The fourth proportional to 73.49, 101.30 and 57.09 is: 78.69
Step by Step Solution
- Step 1: Write the proportion equation
73.49 : 101.30 = 57.09 : x - Step 2: Convert to fraction form
73.49/101.30 = 57.09/x - Step 3: Cross multiply
73.49x = 101.30 × 57.09 - Step 4: Simplify right side
73.49x = 5,782.85 - Step 5: Solve for x
x = 5,782.85/73.49 - Step 6: Final answer
x = 78.69
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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.