Finding the Fourth Proportional to 339.64, 468.57 and 228.99
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Solution
The fourth proportional to 339.64, 468.57 and 228.99 is: 315.92
Step by Step Solution
- Step 1: Write the proportion equation
339.64 : 468.57 = 228.99 : x - Step 2: Convert to fraction form
339.64/468.57 = 228.99/x - Step 3: Cross multiply
339.64x = 468.57 × 228.99 - Step 4: Simplify right side
339.64x = 107,297.84 - Step 5: Solve for x
x = 107,297.84/339.64 - Step 6: Final answer
x = 315.92
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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.