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Finding the Fourth Proportional to 483.84, 668.16 and 328.32

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Solution

The fourth proportional to 483.84, 668.16 and 328.32 is: 453.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.84 : 668.16 = 328.32 : x
  2. Step 2: Convert to fraction form
    483.84/668.16 = 328.32/x
  3. Step 3: Cross multiply
    483.84x = 668.16 × 328.32
  4. Step 4: Simplify right side
    483.84x = 219,370.29
  5. Step 5: Solve for x
    x = 219,370.29/483.84
  6. Step 6: Final answer
    x = 453.39

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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.