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Finding the Fourth Proportional to 353.34, 486.84 and 270.19

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Solution

The fourth proportional to 353.34, 486.84 and 270.19 is: 372.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.34 : 486.84 = 270.19 : x
  2. Step 2: Convert to fraction form
    353.34/486.84 = 270.19/x
  3. Step 3: Cross multiply
    353.34x = 486.84 × 270.19
  4. Step 4: Simplify right side
    353.34x = 131,535.90
  5. Step 5: Solve for x
    x = 131,535.90/353.34
  6. Step 6: Final answer
    x = 372.27

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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.