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Finding the Fourth Proportional to 503.97, 756.28 and 215.41

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Solution

The fourth proportional to 503.97, 756.28 and 215.41 is: 323.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.97 : 756.28 = 215.41 : x
  2. Step 2: Convert to fraction form
    503.97/756.28 = 215.41/x
  3. Step 3: Cross multiply
    503.97x = 756.28 × 215.41
  4. Step 4: Simplify right side
    503.97x = 162,910.27
  5. Step 5: Solve for x
    x = 162,910.27/503.97
  6. Step 6: Final answer
    x = 323.25

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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.