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Finding the Fourth Proportional to 483.28, 668.12 and 462.88

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Solution

The fourth proportional to 483.28, 668.12 and 462.88 is: 639.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.28 : 668.12 = 462.88 : x
  2. Step 2: Convert to fraction form
    483.28/668.12 = 462.88/x
  3. Step 3: Cross multiply
    483.28x = 668.12 × 462.88
  4. Step 4: Simplify right side
    483.28x = 309,259.39
  5. Step 5: Solve for x
    x = 309,259.39/483.28
  6. Step 6: Final answer
    x = 639.92

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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.