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Finding the Fourth Proportional to 575.91, 860.27 and 379.28

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Solution

The fourth proportional to 575.91, 860.27 and 379.28 is: 566.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.91 : 860.27 = 379.28 : x
  2. Step 2: Convert to fraction form
    575.91/860.27 = 379.28/x
  3. Step 3: Cross multiply
    575.91x = 860.27 × 379.28
  4. Step 4: Simplify right side
    575.91x = 326,285.59
  5. Step 5: Solve for x
    x = 326,285.59/575.91
  6. Step 6: Final answer
    x = 566.56

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.