Finding the Fourth Proportional to 207.08, 310.62 and 109.80
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Solution
The fourth proportional to 207.08, 310.62 and 109.80 is: 164.70
Step by Step Solution
- Step 1: Write the proportion equation
207.08 : 310.62 = 109.80 : x - Step 2: Convert to fraction form
207.08/310.62 = 109.80/x - Step 3: Cross multiply
207.08x = 310.62 × 109.80 - Step 4: Simplify right side
207.08x = 34,106.08 - Step 5: Solve for x
x = 34,106.08/207.08 - Step 6: Final answer
x = 164.70
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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.