Finding the Fourth Proportional to 202.68, 303.86 and 87.18
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Solution
The fourth proportional to 202.68, 303.86 and 87.18 is: 130.70
Step by Step Solution
- Step 1: Write the proportion equation
202.68 : 303.86 = 87.18 : x - Step 2: Convert to fraction form
202.68/303.86 = 87.18/x - Step 3: Cross multiply
202.68x = 303.86 × 87.18 - Step 4: Simplify right side
202.68x = 26,490.08 - Step 5: Solve for x
x = 26,490.08/202.68 - Step 6: Final answer
x = 130.70
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.