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Finding the Fourth Proportional to 541.49, 811.82 and 403.79

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Solution

The fourth proportional to 541.49, 811.82 and 403.79 is: 605.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.49 : 811.82 = 403.79 : x
  2. Step 2: Convert to fraction form
    541.49/811.82 = 403.79/x
  3. Step 3: Cross multiply
    541.49x = 811.82 × 403.79
  4. Step 4: Simplify right side
    541.49x = 327,801.75
  5. Step 5: Solve for x
    x = 327,801.75/541.49
  6. Step 6: Final answer
    x = 605.38

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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.