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Finding the Fourth Proportional to 605.33, 908.03 and 215.31

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Solution

The fourth proportional to 605.33, 908.03 and 215.31 is: 322.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.33 : 908.03 = 215.31 : x
  2. Step 2: Convert to fraction form
    605.33/908.03 = 215.31/x
  3. Step 3: Cross multiply
    605.33x = 908.03 × 215.31
  4. Step 4: Simplify right side
    605.33x = 195,506.86
  5. Step 5: Solve for x
    x = 195,506.86/605.33
  6. Step 6: Final answer
    x = 322.98

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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.