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Finding the Fourth Proportional to 584.78, 876.89 and 287.94

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Solution

The fourth proportional to 584.78, 876.89 and 287.94 is: 431.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    584.78 : 876.89 = 287.94 : x
  2. Step 2: Convert to fraction form
    584.78/876.89 = 287.94/x
  3. Step 3: Cross multiply
    584.78x = 876.89 × 287.94
  4. Step 4: Simplify right side
    584.78x = 252,490.27
  5. Step 5: Solve for x
    x = 252,490.27/584.78
  6. Step 6: Final answer
    x = 431.77

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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.