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Finding the Fourth Proportional to 627.69, 866.11 and 365.66

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Solution

The fourth proportional to 627.69, 866.11 and 365.66 is: 504.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.69 : 866.11 = 365.66 : x
  2. Step 2: Convert to fraction form
    627.69/866.11 = 365.66/x
  3. Step 3: Cross multiply
    627.69x = 866.11 × 365.66
  4. Step 4: Simplify right side
    627.69x = 316,701.78
  5. Step 5: Solve for x
    x = 316,701.78/627.69
  6. Step 6: Final answer
    x = 504.55

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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.