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Finding the Fourth Proportional to 627.80, 866.30 and 365.82

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Solution

The fourth proportional to 627.80, 866.30 and 365.82 is: 504.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.80 : 866.30 = 365.82 : x
  2. Step 2: Convert to fraction form
    627.80/866.30 = 365.82/x
  3. Step 3: Cross multiply
    627.80x = 866.30 × 365.82
  4. Step 4: Simplify right side
    627.80x = 316,909.87
  5. Step 5: Solve for x
    x = 316,909.87/627.80
  6. Step 6: Final answer
    x = 504.79

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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.