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Finding the Fourth Proportional to 628.61, 943.01 and 238.59

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Solution

The fourth proportional to 628.61, 943.01 and 238.59 is: 357.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.61 : 943.01 = 238.59 : x
  2. Step 2: Convert to fraction form
    628.61/943.01 = 238.59/x
  3. Step 3: Cross multiply
    628.61x = 943.01 × 238.59
  4. Step 4: Simplify right side
    628.61x = 224,991.56
  5. Step 5: Solve for x
    x = 224,991.56/628.61
  6. Step 6: Final answer
    x = 357.92

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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.