Finding the Fourth Proportional to 403.55, 557 and 228.99
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Solution
The fourth proportional to 403.55, 557 and 228.99 is: 316.06
Step by Step Solution
- Step 1: Write the proportion equation
403.55 : 557 = 228.99 : x - Step 2: Convert to fraction form
403.55/557 = 228.99/x - Step 3: Cross multiply
403.55x = 557 × 228.99 - Step 4: Simplify right side
403.55x = 127,547.43 - Step 5: Solve for x
x = 127,547.43/403.55 - Step 6: Final answer
x = 316.06
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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.