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Finding the Fourth Proportional to 353.13, 487.02 and 270.09

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Solution

The fourth proportional to 353.13, 487.02 and 270.09 is: 372.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.13 : 487.02 = 270.09 : x
  2. Step 2: Convert to fraction form
    353.13/487.02 = 270.09/x
  3. Step 3: Cross multiply
    353.13x = 487.02 × 270.09
  4. Step 4: Simplify right side
    353.13x = 131,539.23
  5. Step 5: Solve for x
    x = 131,539.23/353.13
  6. Step 6: Final answer
    x = 372.50

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.