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Finding the Fourth Proportional to 637.01, 879.48 and 401.27

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Solution

The fourth proportional to 637.01, 879.48 and 401.27 is: 554.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.01 : 879.48 = 401.27 : x
  2. Step 2: Convert to fraction form
    637.01/879.48 = 401.27/x
  3. Step 3: Cross multiply
    637.01x = 879.48 × 401.27
  4. Step 4: Simplify right side
    637.01x = 352,906.93
  5. Step 5: Solve for x
    x = 352,906.93/637.01
  6. Step 6: Final answer
    x = 554.01

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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.