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Finding the Fourth Proportional to 479.03, 717.60 and 427.43

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Solution

The fourth proportional to 479.03, 717.60 and 427.43 is: 640.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.03 : 717.60 = 427.43 : x
  2. Step 2: Convert to fraction form
    479.03/717.60 = 427.43/x
  3. Step 3: Cross multiply
    479.03x = 717.60 × 427.43
  4. Step 4: Simplify right side
    479.03x = 306,720.18
  5. Step 5: Solve for x
    x = 306,720.18/479.03
  6. Step 6: Final answer
    x = 640.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.