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Finding the Fourth Proportional to 629.25, 943.20 and 303.90

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Solution

The fourth proportional to 629.25, 943.20 and 303.90 is: 455.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.25 : 943.20 = 303.90 : x
  2. Step 2: Convert to fraction form
    629.25/943.20 = 303.90/x
  3. Step 3: Cross multiply
    629.25x = 943.20 × 303.90
  4. Step 4: Simplify right side
    629.25x = 286,638.48
  5. Step 5: Solve for x
    x = 286,638.48/629.25
  6. Step 6: Final answer
    x = 455.52

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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.