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Finding the Fourth Proportional to 494.58, 735.50 and 479.20

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Solution

The fourth proportional to 494.58, 735.50 and 479.20 is: 712.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.58 : 735.50 = 479.20 : x
  2. Step 2: Convert to fraction form
    494.58/735.50 = 479.20/x
  3. Step 3: Cross multiply
    494.58x = 735.50 × 479.20
  4. Step 4: Simplify right side
    494.58x = 352,451.60
  5. Step 5: Solve for x
    x = 352,451.60/494.58
  6. Step 6: Final answer
    x = 712.63

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.