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Finding the Fourth Proportional to 619.70, 854.89 and 370.97

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Solution

The fourth proportional to 619.70, 854.89 and 370.97 is: 511.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.70 : 854.89 = 370.97 : x
  2. Step 2: Convert to fraction form
    619.70/854.89 = 370.97/x
  3. Step 3: Cross multiply
    619.70x = 854.89 × 370.97
  4. Step 4: Simplify right side
    619.70x = 317,135.05
  5. Step 5: Solve for x
    x = 317,135.05/619.70
  6. Step 6: Final answer
    x = 511.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.