Finding the Fourth Proportional to 403.60, 556.99 and 305.18
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Solution
The fourth proportional to 403.60, 556.99 and 305.18 is: 421.17
Step by Step Solution
- Step 1: Write the proportion equation
403.60 : 556.99 = 305.18 : x - Step 2: Convert to fraction form
403.60/556.99 = 305.18/x - Step 3: Cross multiply
403.60x = 556.99 × 305.18 - Step 4: Simplify right side
403.60x = 169,982.21 - Step 5: Solve for x
x = 169,982.21/403.60 - Step 6: Final answer
x = 421.17
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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.