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Finding the Fourth Proportional to 637.28, 879.44 and 375.29

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Solution

The fourth proportional to 637.28, 879.44 and 375.29 is: 517.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.28 : 879.44 = 375.29 : x
  2. Step 2: Convert to fraction form
    637.28/879.44 = 375.29/x
  3. Step 3: Cross multiply
    637.28x = 879.44 × 375.29
  4. Step 4: Simplify right side
    637.28x = 330,038.76
  5. Step 5: Solve for x
    x = 330,038.76/637.28
  6. Step 6: Final answer
    x = 517.89

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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.