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Finding the Fourth Proportional to 627.38, 865.71 and 365.36

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Solution

The fourth proportional to 627.38, 865.71 and 365.36 is: 504.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.38 : 865.71 = 365.36 : x
  2. Step 2: Convert to fraction form
    627.38/865.71 = 365.36/x
  3. Step 3: Cross multiply
    627.38x = 865.71 × 365.36
  4. Step 4: Simplify right side
    627.38x = 316,295.81
  5. Step 5: Solve for x
    x = 316,295.81/627.38
  6. Step 6: Final answer
    x = 504.15

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Double scale
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1.5x scale

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.