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Finding the Fourth Proportional to 482.70, 664.04 and 479.22

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Solution

The fourth proportional to 482.70, 664.04 and 479.22 is: 659.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.70 : 664.04 = 479.22 : x
  2. Step 2: Convert to fraction form
    482.70/664.04 = 479.22/x
  3. Step 3: Cross multiply
    482.70x = 664.04 × 479.22
  4. Step 4: Simplify right side
    482.70x = 318,218.85
  5. Step 5: Solve for x
    x = 318,218.85/482.70
  6. Step 6: Final answer
    x = 659.25

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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.