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Finding the Fourth Proportional to 586.05, 879.17 and 220.83

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Solution

The fourth proportional to 586.05, 879.17 and 220.83 is: 331.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.05 : 879.17 = 220.83 : x
  2. Step 2: Convert to fraction form
    586.05/879.17 = 220.83/x
  3. Step 3: Cross multiply
    586.05x = 879.17 × 220.83
  4. Step 4: Simplify right side
    586.05x = 194,146.01
  5. Step 5: Solve for x
    x = 194,146.01/586.05
  6. Step 6: Final answer
    x = 331.28

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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.