Finding the Fourth Proportional to 207.18, 310.74 and 62.90
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Solution
The fourth proportional to 207.18, 310.74 and 62.90 is: 94.33
Step by Step Solution
- Step 1: Write the proportion equation
207.18 : 310.74 = 62.90 : x - Step 2: Convert to fraction form
207.18/310.74 = 62.90/x - Step 3: Cross multiply
207.18x = 310.74 × 62.90 - Step 4: Simplify right side
207.18x = 19,543.99 - Step 5: Solve for x
x = 19,543.99/207.18 - Step 6: Final answer
x = 94.33
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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.