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Finding the Fourth Proportional to 333.28, 458.48 and 328.16

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Solution

The fourth proportional to 333.28, 458.48 and 328.16 is: 451.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.28 : 458.48 = 328.16 : x
  2. Step 2: Convert to fraction form
    333.28/458.48 = 328.16/x
  3. Step 3: Cross multiply
    333.28x = 458.48 × 328.16
  4. Step 4: Simplify right side
    333.28x = 150,454.80
  5. Step 5: Solve for x
    x = 150,454.80/333.28
  6. Step 6: Final answer
    x = 451.44

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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.