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Finding the Fourth Proportional to 333.22, 459.81 and 280.57

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Solution

The fourth proportional to 333.22, 459.81 and 280.57 is: 387.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.22 : 459.81 = 280.57 : x
  2. Step 2: Convert to fraction form
    333.22/459.81 = 280.57/x
  3. Step 3: Cross multiply
    333.22x = 459.81 × 280.57
  4. Step 4: Simplify right side
    333.22x = 129,008.89
  5. Step 5: Solve for x
    x = 129,008.89/333.22
  6. Step 6: Final answer
    x = 387.16

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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.