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Finding the Fourth Proportional to 605.96, 909.06 and 215.99

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Solution

The fourth proportional to 605.96, 909.06 and 215.99 is: 324.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.96 : 909.06 = 215.99 : x
  2. Step 2: Convert to fraction form
    605.96/909.06 = 215.99/x
  3. Step 3: Cross multiply
    605.96x = 909.06 × 215.99
  4. Step 4: Simplify right side
    605.96x = 196,345.92
  5. Step 5: Solve for x
    x = 196,345.92/605.96
  6. Step 6: Final answer
    x = 324.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.