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Finding the Fourth Proportional to 333.28, 459.04 and 286.56

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Solution

The fourth proportional to 333.28, 459.04 and 286.56 is: 394.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.28 : 459.04 = 286.56 : x
  2. Step 2: Convert to fraction form
    333.28/459.04 = 286.56/x
  3. Step 3: Cross multiply
    333.28x = 459.04 × 286.56
  4. Step 4: Simplify right side
    333.28x = 131,542.50
  5. Step 5: Solve for x
    x = 131,542.50/333.28
  6. Step 6: Final answer
    x = 394.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.