Finding the Fourth Proportional to 93.52, 129.21 and 74.08
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Solution
The fourth proportional to 93.52, 129.21 and 74.08 is: 102.35
Step by Step Solution
- Step 1: Write the proportion equation
93.52 : 129.21 = 74.08 : x - Step 2: Convert to fraction form
93.52/129.21 = 74.08/x - Step 3: Cross multiply
93.52x = 129.21 × 74.08 - Step 4: Simplify right side
93.52x = 9,571.88 - Step 5: Solve for x
x = 9,571.88/93.52 - Step 6: Final answer
x = 102.35
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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.