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Finding the Fourth Proportional to 637.36, 879.11 and 448

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Solution

The fourth proportional to 637.36, 879.11 and 448 is: 617.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.36 : 879.11 = 448 : x
  2. Step 2: Convert to fraction form
    637.36/879.11 = 448/x
  3. Step 3: Cross multiply
    637.36x = 879.11 × 448
  4. Step 4: Simplify right side
    637.36x = 393,839.04
  5. Step 5: Solve for x
    x = 393,839.04/637.36
  6. Step 6: Final answer
    x = 617.92

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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.