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Finding the Fourth Proportional to 585.88, 878.64 and 220.84

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Solution

The fourth proportional to 585.88, 878.64 and 220.84 is: 331.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.88 : 878.64 = 220.84 : x
  2. Step 2: Convert to fraction form
    585.88/878.64 = 220.84/x
  3. Step 3: Cross multiply
    585.88x = 878.64 × 220.84
  4. Step 4: Simplify right side
    585.88x = 194,038.86
  5. Step 5: Solve for x
    x = 194,038.86/585.88
  6. Step 6: Final answer
    x = 331.19

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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.