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Finding the Fourth Proportional to 503.21, 752.99 and 326.90

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Solution

The fourth proportional to 503.21, 752.99 and 326.90 is: 489.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.21 : 752.99 = 326.90 : x
  2. Step 2: Convert to fraction form
    503.21/752.99 = 326.90/x
  3. Step 3: Cross multiply
    503.21x = 752.99 × 326.90
  4. Step 4: Simplify right side
    503.21x = 246,147.03
  5. Step 5: Solve for x
    x = 246,147.03/503.21
  6. Step 6: Final answer
    x = 489.16

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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.