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Finding the Fourth Proportional to 637.23, 879.59 and 401.57

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Solution

The fourth proportional to 637.23, 879.59 and 401.57 is: 554.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.23 : 879.59 = 401.57 : x
  2. Step 2: Convert to fraction form
    637.23/879.59 = 401.57/x
  3. Step 3: Cross multiply
    637.23x = 879.59 × 401.57
  4. Step 4: Simplify right side
    637.23x = 353,215.35
  5. Step 5: Solve for x
    x = 353,215.35/637.23
  6. Step 6: Final answer
    x = 554.30

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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.