Finding the Fourth Proportional to 345.13, 516.91 and 207.87
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Solution
The fourth proportional to 345.13, 516.91 and 207.87 is: 311.33
Step by Step Solution
- Step 1: Write the proportion equation
345.13 : 516.91 = 207.87 : x - Step 2: Convert to fraction form
345.13/516.91 = 207.87/x - Step 3: Cross multiply
345.13x = 516.91 × 207.87 - Step 4: Simplify right side
345.13x = 107,450.08 - Step 5: Solve for x
x = 107,450.08/345.13 - Step 6: Final answer
x = 311.33
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.