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Finding the Fourth Proportional to 957.68, 1,436.80 and 333

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Solution

The fourth proportional to 957.68, 1,436.80 and 333 is: 499.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    957.68 : 1,436.80 = 333 : x
  2. Step 2: Convert to fraction form
    957.68/1,436.80 = 333/x
  3. Step 3: Cross multiply
    957.68x = 1,436.80 × 333
  4. Step 4: Simplify right side
    957.68x = 478,454.40
  5. Step 5: Solve for x
    x = 478,454.40/957.68
  6. Step 6: Final answer
    x = 499.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.