Finding the Fourth Proportional to 438.03, 657.14 and 207.18
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Solution
The fourth proportional to 438.03, 657.14 and 207.18 is: 310.81
Step by Step Solution
- Step 1: Write the proportion equation
438.03 : 657.14 = 207.18 : x - Step 2: Convert to fraction form
438.03/657.14 = 207.18/x - Step 3: Cross multiply
438.03x = 657.14 × 207.18 - Step 4: Simplify right side
438.03x = 136,145.23 - Step 5: Solve for x
x = 136,145.23/438.03 - Step 6: Final answer
x = 310.81
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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.