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Finding the Fourth Proportional to 480.19, 662.87 and 303.31

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Solution

The fourth proportional to 480.19, 662.87 and 303.31 is: 418.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.19 : 662.87 = 303.31 : x
  2. Step 2: Convert to fraction form
    480.19/662.87 = 303.31/x
  3. Step 3: Cross multiply
    480.19x = 662.87 × 303.31
  4. Step 4: Simplify right side
    480.19x = 201,055.10
  5. Step 5: Solve for x
    x = 201,055.10/480.19
  6. Step 6: Final answer
    x = 418.70

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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.