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Finding the Fourth Proportional to 628.74, 941.61 and 303.06

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Solution

The fourth proportional to 628.74, 941.61 and 303.06 is: 453.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.74 : 941.61 = 303.06 : x
  2. Step 2: Convert to fraction form
    628.74/941.61 = 303.06/x
  3. Step 3: Cross multiply
    628.74x = 941.61 × 303.06
  4. Step 4: Simplify right side
    628.74x = 285,364.33
  5. Step 5: Solve for x
    x = 285,364.33/628.74
  6. Step 6: Final answer
    x = 453.87

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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.