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Finding the Fourth Proportional to 629.30, 943.80 and 264.09

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Solution

The fourth proportional to 629.30, 943.80 and 264.09 is: 396.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.30 : 943.80 = 264.09 : x
  2. Step 2: Convert to fraction form
    629.30/943.80 = 264.09/x
  3. Step 3: Cross multiply
    629.30x = 943.80 × 264.09
  4. Step 4: Simplify right side
    629.30x = 249,248.14
  5. Step 5: Solve for x
    x = 249,248.14/629.30
  6. Step 6: Final answer
    x = 396.07

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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.