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Finding the Fourth Proportional to 586.06, 878.41 and 220.61

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Solution

The fourth proportional to 586.06, 878.41 and 220.61 is: 330.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.06 : 878.41 = 220.61 : x
  2. Step 2: Convert to fraction form
    586.06/878.41 = 220.61/x
  3. Step 3: Cross multiply
    586.06x = 878.41 × 220.61
  4. Step 4: Simplify right side
    586.06x = 193,786.03
  5. Step 5: Solve for x
    x = 193,786.03/586.06
  6. Step 6: Final answer
    x = 330.66

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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.