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Finding the Fourth Proportional to 503.24, 755.10 and 320.84

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Solution

The fourth proportional to 503.24, 755.10 and 320.84 is: 481.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.24 : 755.10 = 320.84 : x
  2. Step 2: Convert to fraction form
    503.24/755.10 = 320.84/x
  3. Step 3: Cross multiply
    503.24x = 755.10 × 320.84
  4. Step 4: Simplify right side
    503.24x = 242,266.28
  5. Step 5: Solve for x
    x = 242,266.28/503.24
  6. Step 6: Final answer
    x = 481.41

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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.