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Finding the Fourth Proportional to 628.02, 942.02 and 303.30

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Solution

The fourth proportional to 628.02, 942.02 and 303.30 is: 454.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.02 : 942.02 = 303.30 : x
  2. Step 2: Convert to fraction form
    628.02/942.02 = 303.30/x
  3. Step 3: Cross multiply
    628.02x = 942.02 × 303.30
  4. Step 4: Simplify right side
    628.02x = 285,714.67
  5. Step 5: Solve for x
    x = 285,714.67/628.02
  6. Step 6: Final answer
    x = 454.95

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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.