Finding the Fourth Proportional to 153.60, 211.91 and 88.09
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Solution
The fourth proportional to 153.60, 211.91 and 88.09 is: 121.53
Step by Step Solution
- Step 1: Write the proportion equation
153.60 : 211.91 = 88.09 : x - Step 2: Convert to fraction form
153.60/211.91 = 88.09/x - Step 3: Cross multiply
153.60x = 211.91 × 88.09 - Step 4: Simplify right side
153.60x = 18,667.15 - Step 5: Solve for x
x = 18,667.15/153.60 - Step 6: Final answer
x = 121.53
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.