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Finding the Fourth Proportional to 637.54, 882.39 and 621.34

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Solution

The fourth proportional to 637.54, 882.39 and 621.34 is: 859.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.54 : 882.39 = 621.34 : x
  2. Step 2: Convert to fraction form
    637.54/882.39 = 621.34/x
  3. Step 3: Cross multiply
    637.54x = 882.39 × 621.34
  4. Step 4: Simplify right side
    637.54x = 548,264.33
  5. Step 5: Solve for x
    x = 548,264.33/637.54
  6. Step 6: Final answer
    x = 859.97

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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.