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Finding the Fourth Proportional to 629.92, 945.28 and 356.54

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Solution

The fourth proportional to 629.92, 945.28 and 356.54 is: 535.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.92 : 945.28 = 356.54 : x
  2. Step 2: Convert to fraction form
    629.92/945.28 = 356.54/x
  3. Step 3: Cross multiply
    629.92x = 945.28 × 356.54
  4. Step 4: Simplify right side
    629.92x = 337,030.13
  5. Step 5: Solve for x
    x = 337,030.13/629.92
  6. Step 6: Final answer
    x = 535.04

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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.