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Finding the Fourth Proportional to 480.04, 662.45 and 305.38

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Solution

The fourth proportional to 480.04, 662.45 and 305.38 is: 421.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.04 : 662.45 = 305.38 : x
  2. Step 2: Convert to fraction form
    480.04/662.45 = 305.38/x
  3. Step 3: Cross multiply
    480.04x = 662.45 × 305.38
  4. Step 4: Simplify right side
    480.04x = 202,294.14
  5. Step 5: Solve for x
    x = 202,294.14/480.04
  6. Step 6: Final answer
    x = 421.42

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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.