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Finding the Fourth Proportional to 568.58, 785.43 and 439.25

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Solution

The fourth proportional to 568.58, 785.43 and 439.25 is: 606.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.58 : 785.43 = 439.25 : x
  2. Step 2: Convert to fraction form
    568.58/785.43 = 439.25/x
  3. Step 3: Cross multiply
    568.58x = 785.43 × 439.25
  4. Step 4: Simplify right side
    568.58x = 344,996.20
  5. Step 5: Solve for x
    x = 344,996.20/568.58
  6. Step 6: Final answer
    x = 606.77

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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.