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Finding the Fourth Proportional to 635.00, 876.71 and 399.27

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Solution

The fourth proportional to 635.00, 876.71 and 399.27 is: 551.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.00 : 876.71 = 399.27 : x
  2. Step 2: Convert to fraction form
    635.00/876.71 = 399.27/x
  3. Step 3: Cross multiply
    635.00x = 876.71 × 399.27
  4. Step 4: Simplify right side
    635.00x = 350,042.01
  5. Step 5: Solve for x
    x = 350,042.01/635.00
  6. Step 6: Final answer
    x = 551.25

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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.