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Finding the Fourth Proportional to 353.45, 486.57 and 304.04

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Solution

The fourth proportional to 353.45, 486.57 and 304.04 is: 418.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.45 : 486.57 = 304.04 : x
  2. Step 2: Convert to fraction form
    353.45/486.57 = 304.04/x
  3. Step 3: Cross multiply
    353.45x = 486.57 × 304.04
  4. Step 4: Simplify right side
    353.45x = 147,939.10
  5. Step 5: Solve for x
    x = 147,939.10/353.45
  6. Step 6: Final answer
    x = 418.55

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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.