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Finding the Fourth Proportional to 568.26, 784.46 and 381.88

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Solution

The fourth proportional to 568.26, 784.46 and 381.88 is: 527.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.26 : 784.46 = 381.88 : x
  2. Step 2: Convert to fraction form
    568.26/784.46 = 381.88/x
  3. Step 3: Cross multiply
    568.26x = 784.46 × 381.88
  4. Step 4: Simplify right side
    568.26x = 299,569.58
  5. Step 5: Solve for x
    x = 299,569.58/568.26
  6. Step 6: Final answer
    x = 527.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.