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Finding the Fourth Proportional to 1,494.28, 2,242.38 and 628.59

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Solution

The fourth proportional to 1,494.28, 2,242.38 and 628.59 is: 943.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,494.28 : 2,242.38 = 628.59 : x
  2. Step 2: Convert to fraction form
    1,494.28/2,242.38 = 628.59/x
  3. Step 3: Cross multiply
    1,494.28x = 2,242.38 × 628.59
  4. Step 4: Simplify right side
    1,494.28x = 1,409,548.41
  5. Step 5: Solve for x
    x = 1,409,548.41/1,494.28
  6. Step 6: Final answer
    x = 943.30

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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.