Finding the Fourth Proportional to 207.18, 285.63 and 167.79
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Solution
The fourth proportional to 207.18, 285.63 and 167.79 is: 231.32
Step by Step Solution
- Step 1: Write the proportion equation
207.18 : 285.63 = 167.79 : x - Step 2: Convert to fraction form
207.18/285.63 = 167.79/x - Step 3: Cross multiply
207.18x = 285.63 × 167.79 - Step 4: Simplify right side
207.18x = 47,925.86 - Step 5: Solve for x
x = 47,925.86/207.18 - Step 6: Final answer
x = 231.32
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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.