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Finding the Fourth Proportional to 333.28, 459.72 and 215.41

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Solution

The fourth proportional to 333.28, 459.72 and 215.41 is: 297.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.28 : 459.72 = 215.41 : x
  2. Step 2: Convert to fraction form
    333.28/459.72 = 215.41/x
  3. Step 3: Cross multiply
    333.28x = 459.72 × 215.41
  4. Step 4: Simplify right side
    333.28x = 99,028.29
  5. Step 5: Solve for x
    x = 99,028.29/333.28
  6. Step 6: Final answer
    x = 297.13

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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.