Finding the Fourth Proportional to 135.74, 187.18 and 104.66
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Solution
The fourth proportional to 135.74, 187.18 and 104.66 is: 144.32
Step by Step Solution
- Step 1: Write the proportion equation
135.74 : 187.18 = 104.66 : x - Step 2: Convert to fraction form
135.74/187.18 = 104.66/x - Step 3: Cross multiply
135.74x = 187.18 × 104.66 - Step 4: Simplify right side
135.74x = 19,590.26 - Step 5: Solve for x
x = 19,590.26/135.74 - Step 6: Final answer
x = 144.32
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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.