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Finding the Fourth Proportional to 403.61, 556.09 and 336.97

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Solution

The fourth proportional to 403.61, 556.09 and 336.97 is: 464.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.61 : 556.09 = 336.97 : x
  2. Step 2: Convert to fraction form
    403.61/556.09 = 336.97/x
  3. Step 3: Cross multiply
    403.61x = 556.09 × 336.97
  4. Step 4: Simplify right side
    403.61x = 187,387.23
  5. Step 5: Solve for x
    x = 187,387.23/403.61
  6. Step 6: Final answer
    x = 464.28

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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.