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Finding the Fourth Proportional to 483.66, 663.11 and 474.90

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Solution

The fourth proportional to 483.66, 663.11 and 474.90 is: 651.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.66 : 663.11 = 474.90 : x
  2. Step 2: Convert to fraction form
    483.66/663.11 = 474.90/x
  3. Step 3: Cross multiply
    483.66x = 663.11 × 474.90
  4. Step 4: Simplify right side
    483.66x = 314,908.56
  5. Step 5: Solve for x
    x = 314,908.56/483.66
  6. Step 6: Final answer
    x = 651.09

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.