Finding the Fourth Proportional to 657.23, 906.86 and 395.19
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Solution
The fourth proportional to 657.23, 906.86 and 395.19 is: 545.30
Step by Step Solution
- Step 1: Write the proportion equation
657.23 : 906.86 = 395.19 : x - Step 2: Convert to fraction form
657.23/906.86 = 395.19/x - Step 3: Cross multiply
657.23x = 906.86 × 395.19 - Step 4: Simplify right side
657.23x = 358,382.99 - Step 5: Solve for x
x = 358,382.99/657.23 - Step 6: Final answer
x = 545.30
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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.