Finding the Fourth Proportional to 93.68, 129.30 and 73.08
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Solution
The fourth proportional to 93.68, 129.30 and 73.08 is: 100.87
Step by Step Solution
- Step 1: Write the proportion equation
93.68 : 129.30 = 73.08 : x - Step 2: Convert to fraction form
93.68/129.30 = 73.08/x - Step 3: Cross multiply
93.68x = 129.30 × 73.08 - Step 4: Simplify right side
93.68x = 9,449.24 - Step 5: Solve for x
x = 9,449.24/93.68 - Step 6: Final answer
x = 100.87
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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.