Finding the Fourth Proportional to 405.08, 607.68 and 199.62
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Solution
The fourth proportional to 405.08, 607.68 and 199.62 is: 299.46
Step by Step Solution
- Step 1: Write the proportion equation
405.08 : 607.68 = 199.62 : x - Step 2: Convert to fraction form
405.08/607.68 = 199.62/x - Step 3: Cross multiply
405.08x = 607.68 × 199.62 - Step 4: Simplify right side
405.08x = 121,305.08 - Step 5: Solve for x
x = 121,305.08/405.08 - Step 6: Final answer
x = 299.46
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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.