Finding the Fourth Proportional to 405.84, 608.68 and 117.28
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Solution
The fourth proportional to 405.84, 608.68 and 117.28 is: 175.90
Step by Step Solution
- Step 1: Write the proportion equation
405.84 : 608.68 = 117.28 : x - Step 2: Convert to fraction form
405.84/608.68 = 117.28/x - Step 3: Cross multiply
405.84x = 608.68 × 117.28 - Step 4: Simplify right side
405.84x = 71,385.99 - Step 5: Solve for x
x = 71,385.99/405.84 - Step 6: Final answer
x = 175.90
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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.