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Finding the Fourth Proportional to 956.44, 1,434.12 and 379

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Solution

The fourth proportional to 956.44, 1,434.12 and 379 is: 568.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.44 : 1,434.12 = 379 : x
  2. Step 2: Convert to fraction form
    956.44/1,434.12 = 379/x
  3. Step 3: Cross multiply
    956.44x = 1,434.12 × 379
  4. Step 4: Simplify right side
    956.44x = 543,531.48
  5. Step 5: Solve for x
    x = 543,531.48/956.44
  6. Step 6: Final answer
    x = 568.29

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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.