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Finding the Fourth Proportional to 574.06, 860.82 and 392.53

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Solution

The fourth proportional to 574.06, 860.82 and 392.53 is: 588.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.06 : 860.82 = 392.53 : x
  2. Step 2: Convert to fraction form
    574.06/860.82 = 392.53/x
  3. Step 3: Cross multiply
    574.06x = 860.82 × 392.53
  4. Step 4: Simplify right side
    574.06x = 337,897.67
  5. Step 5: Solve for x
    x = 337,897.67/574.06
  6. Step 6: Final answer
    x = 588.61

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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.