Finding the Fourth Proportional to 93.63, 129.21 and 52.19
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Solution
The fourth proportional to 93.63, 129.21 and 52.19 is: 72.02
Step by Step Solution
- Step 1: Write the proportion equation
93.63 : 129.21 = 52.19 : x - Step 2: Convert to fraction form
93.63/129.21 = 52.19/x - Step 3: Cross multiply
93.63x = 129.21 × 52.19 - Step 4: Simplify right side
93.63x = 6,743.67 - Step 5: Solve for x
x = 6,743.67/93.63 - Step 6: Final answer
x = 72.02
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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.