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Finding the Fourth Proportional to 483.20, 666.81 and 262.15

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Solution

The fourth proportional to 483.20, 666.81 and 262.15 is: 361.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.20 : 666.81 = 262.15 : x
  2. Step 2: Convert to fraction form
    483.20/666.81 = 262.15/x
  3. Step 3: Cross multiply
    483.20x = 666.81 × 262.15
  4. Step 4: Simplify right side
    483.20x = 174,804.24
  5. Step 5: Solve for x
    x = 174,804.24/483.20
  6. Step 6: Final answer
    x = 361.76

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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.