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Finding the Fourth Proportional to 333.20, 459.42 and 216.74

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Solution

The fourth proportional to 333.20, 459.42 and 216.74 is: 298.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.20 : 459.42 = 216.74 : x
  2. Step 2: Convert to fraction form
    333.20/459.42 = 216.74/x
  3. Step 3: Cross multiply
    333.20x = 459.42 × 216.74
  4. Step 4: Simplify right side
    333.20x = 99,574.69
  5. Step 5: Solve for x
    x = 99,574.69/333.20
  6. Step 6: Final answer
    x = 298.84

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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.