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Finding the Fourth Proportional to 627.64, 865.85 and 365.50

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Solution

The fourth proportional to 627.64, 865.85 and 365.50 is: 504.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.64 : 865.85 = 365.50 : x
  2. Step 2: Convert to fraction form
    627.64/865.85 = 365.50/x
  3. Step 3: Cross multiply
    627.64x = 865.85 × 365.50
  4. Step 4: Simplify right side
    627.64x = 316,468.18
  5. Step 5: Solve for x
    x = 316,468.18/627.64
  6. Step 6: Final answer
    x = 504.22

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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.