Finding the Fourth Proportional to 207.02, 310.28 and 129.99
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Solution
The fourth proportional to 207.02, 310.28 and 129.99 is: 194.83
Step by Step Solution
- Step 1: Write the proportion equation
207.02 : 310.28 = 129.99 : x - Step 2: Convert to fraction form
207.02/310.28 = 129.99/x - Step 3: Cross multiply
207.02x = 310.28 × 129.99 - Step 4: Simplify right side
207.02x = 40,332.65 - Step 5: Solve for x
x = 40,332.65/207.02 - Step 6: Final answer
x = 194.83
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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.