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Finding the Fourth Proportional to 637.23, 879.20 and 404.43

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Solution

The fourth proportional to 637.23, 879.20 and 404.43 is: 558.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.23 : 879.20 = 404.43 : x
  2. Step 2: Convert to fraction form
    637.23/879.20 = 404.43/x
  3. Step 3: Cross multiply
    637.23x = 879.20 × 404.43
  4. Step 4: Simplify right side
    637.23x = 355,572.83
  5. Step 5: Solve for x
    x = 355,572.83/637.23
  6. Step 6: Final answer
    x = 558.00

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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.