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Finding the Fourth Proportional to 480.47, 662.90 and 303.39

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Solution

The fourth proportional to 480.47, 662.90 and 303.39 is: 418.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.47 : 662.90 = 303.39 : x
  2. Step 2: Convert to fraction form
    480.47/662.90 = 303.39/x
  3. Step 3: Cross multiply
    480.47x = 662.90 × 303.39
  4. Step 4: Simplify right side
    480.47x = 201,115.71
  5. Step 5: Solve for x
    x = 201,115.71/480.47
  6. Step 6: Final answer
    x = 418.59

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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.