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Finding the Fourth Proportional to 403.36, 554.70 and 359.62

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Solution

The fourth proportional to 403.36, 554.70 and 359.62 is: 494.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.36 : 554.70 = 359.62 : x
  2. Step 2: Convert to fraction form
    403.36/554.70 = 359.62/x
  3. Step 3: Cross multiply
    403.36x = 554.70 × 359.62
  4. Step 4: Simplify right side
    403.36x = 199,481.21
  5. Step 5: Solve for x
    x = 199,481.21/403.36
  6. Step 6: Final answer
    x = 494.55

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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.