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Finding the Fourth Proportional to 585.94, 878.91 and 220.47

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Solution

The fourth proportional to 585.94, 878.91 and 220.47 is: 330.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.94 : 878.91 = 220.47 : x
  2. Step 2: Convert to fraction form
    585.94/878.91 = 220.47/x
  3. Step 3: Cross multiply
    585.94x = 878.91 × 220.47
  4. Step 4: Simplify right side
    585.94x = 193,773.29
  5. Step 5: Solve for x
    x = 193,773.29/585.94
  6. Step 6: Final answer
    x = 330.71

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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.