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Finding the Fourth Proportional to 627.65, 866.58 and 480.02

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Solution

The fourth proportional to 627.65, 866.58 and 480.02 is: 662.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.65 : 866.58 = 480.02 : x
  2. Step 2: Convert to fraction form
    627.65/866.58 = 480.02/x
  3. Step 3: Cross multiply
    627.65x = 866.58 × 480.02
  4. Step 4: Simplify right side
    627.65x = 415,975.73
  5. Step 5: Solve for x
    x = 415,975.73/627.65
  6. Step 6: Final answer
    x = 662.76

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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.