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Finding the Fourth Proportional to 585.62, 878.50 and 220.68

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Solution

The fourth proportional to 585.62, 878.50 and 220.68 is: 331.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.62 : 878.50 = 220.68 : x
  2. Step 2: Convert to fraction form
    585.62/878.50 = 220.68/x
  3. Step 3: Cross multiply
    585.62x = 878.50 × 220.68
  4. Step 4: Simplify right side
    585.62x = 193,867.38
  5. Step 5: Solve for x
    x = 193,867.38/585.62
  6. Step 6: Final answer
    x = 331.05

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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.