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Finding the Fourth Proportional to 584.85, 877.28 and 219.72

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Solution

The fourth proportional to 584.85, 877.28 and 219.72 is: 329.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    584.85 : 877.28 = 219.72 : x
  2. Step 2: Convert to fraction form
    584.85/877.28 = 219.72/x
  3. Step 3: Cross multiply
    584.85x = 877.28 × 219.72
  4. Step 4: Simplify right side
    584.85x = 192,754.86
  5. Step 5: Solve for x
    x = 192,754.86/584.85
  6. Step 6: Final answer
    x = 329.58

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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.