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Finding the Fourth Proportional to 591.49, 884.92 and 427.28

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Solution

The fourth proportional to 591.49, 884.92 and 427.28 is: 639.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.49 : 884.92 = 427.28 : x
  2. Step 2: Convert to fraction form
    591.49/884.92 = 427.28/x
  3. Step 3: Cross multiply
    591.49x = 884.92 × 427.28
  4. Step 4: Simplify right side
    591.49x = 378,108.62
  5. Step 5: Solve for x
    x = 378,108.62/591.49
  6. Step 6: Final answer
    x = 639.25

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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.