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Finding the Fourth Proportional to 480.02, 662.09 and 440.81

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Solution

The fourth proportional to 480.02, 662.09 and 440.81 is: 607.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.02 : 662.09 = 440.81 : x
  2. Step 2: Convert to fraction form
    480.02/662.09 = 440.81/x
  3. Step 3: Cross multiply
    480.02x = 662.09 × 440.81
  4. Step 4: Simplify right side
    480.02x = 291,850.38
  5. Step 5: Solve for x
    x = 291,850.38/480.02
  6. Step 6: Final answer
    x = 607.99

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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.