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Finding the Fourth Proportional to 617.98, 925.16 and 324.79

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Solution

The fourth proportional to 617.98, 925.16 and 324.79 is: 486.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.98 : 925.16 = 324.79 : x
  2. Step 2: Convert to fraction form
    617.98/925.16 = 324.79/x
  3. Step 3: Cross multiply
    617.98x = 925.16 × 324.79
  4. Step 4: Simplify right side
    617.98x = 300,478.78
  5. Step 5: Solve for x
    x = 300,478.78/617.98
  6. Step 6: Final answer
    x = 486.23

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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.