Finding the Fourth Proportional to 106.68, 160.17 and 66.15
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Solution
The fourth proportional to 106.68, 160.17 and 66.15 is: 99.32
Step by Step Solution
- Step 1: Write the proportion equation
106.68 : 160.17 = 66.15 : x - Step 2: Convert to fraction form
106.68/160.17 = 66.15/x - Step 3: Cross multiply
106.68x = 160.17 × 66.15 - Step 4: Simplify right side
106.68x = 10,595.25 - Step 5: Solve for x
x = 10,595.25/106.68 - Step 6: Final answer
x = 99.32
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.