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Finding the Fourth Proportional to 613.02, 845.97 and 480.40

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Solution

The fourth proportional to 613.02, 845.97 and 480.40 is: 662.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.02 : 845.97 = 480.40 : x
  2. Step 2: Convert to fraction form
    613.02/845.97 = 480.40/x
  3. Step 3: Cross multiply
    613.02x = 845.97 × 480.40
  4. Step 4: Simplify right side
    613.02x = 406,403.99
  5. Step 5: Solve for x
    x = 406,403.99/613.02
  6. Step 6: Final answer
    x = 662.95

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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.