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Finding the Fourth Proportional to 619.09, 854.42 and 549.38

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Solution

The fourth proportional to 619.09, 854.42 and 549.38 is: 758.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.09 : 854.42 = 549.38 : x
  2. Step 2: Convert to fraction form
    619.09/854.42 = 549.38/x
  3. Step 3: Cross multiply
    619.09x = 854.42 × 549.38
  4. Step 4: Simplify right side
    619.09x = 469,398.36
  5. Step 5: Solve for x
    x = 469,398.36/619.09
  6. Step 6: Final answer
    x = 758.21

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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.