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Finding the Fourth Proportional to 591.21, 887.49 and 344.70

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Solution

The fourth proportional to 591.21, 887.49 and 344.70 is: 517.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.21 : 887.49 = 344.70 : x
  2. Step 2: Convert to fraction form
    591.21/887.49 = 344.70/x
  3. Step 3: Cross multiply
    591.21x = 887.49 × 344.70
  4. Step 4: Simplify right side
    591.21x = 305,917.80
  5. Step 5: Solve for x
    x = 305,917.80/591.21
  6. Step 6: Final answer
    x = 517.44

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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.