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Finding the Fourth Proportional to 638.28, 959.85 and 601.56

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Solution

The fourth proportional to 638.28, 959.85 and 601.56 is: 904.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    638.28 : 959.85 = 601.56 : x
  2. Step 2: Convert to fraction form
    638.28/959.85 = 601.56/x
  3. Step 3: Cross multiply
    638.28x = 959.85 × 601.56
  4. Step 4: Simplify right side
    638.28x = 577,407.37
  5. Step 5: Solve for x
    x = 577,407.37/638.28
  6. Step 6: Final answer
    x = 904.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.