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Finding the Fourth Proportional to 628.20, 942.03 and 484.02

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Solution

The fourth proportional to 628.20, 942.03 and 484.02 is: 725.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.20 : 942.03 = 484.02 : x
  2. Step 2: Convert to fraction form
    628.20/942.03 = 484.02/x
  3. Step 3: Cross multiply
    628.20x = 942.03 × 484.02
  4. Step 4: Simplify right side
    628.20x = 455,961.36
  5. Step 5: Solve for x
    x = 455,961.36/628.20
  6. Step 6: Final answer
    x = 725.82

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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.