Finding the Fourth Proportional to 155.18, 214.09 and 88.79
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Solution
The fourth proportional to 155.18, 214.09 and 88.79 is: 122.50
Step by Step Solution
- Step 1: Write the proportion equation
155.18 : 214.09 = 88.79 : x - Step 2: Convert to fraction form
155.18/214.09 = 88.79/x - Step 3: Cross multiply
155.18x = 214.09 × 88.79 - Step 4: Simplify right side
155.18x = 19,009.05 - Step 5: Solve for x
x = 19,009.05/155.18 - Step 6: Final answer
x = 122.50
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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.