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Finding the Fourth Proportional to 482.28, 668.22 and 470.40

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Solution

The fourth proportional to 482.28, 668.22 and 470.40 is: 651.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.28 : 668.22 = 470.40 : x
  2. Step 2: Convert to fraction form
    482.28/668.22 = 470.40/x
  3. Step 3: Cross multiply
    482.28x = 668.22 × 470.40
  4. Step 4: Simplify right side
    482.28x = 314,330.69
  5. Step 5: Solve for x
    x = 314,330.69/482.28
  6. Step 6: Final answer
    x = 651.76

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.