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Finding the Fourth Proportional to 503.25, 693.90 and 328.29

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Solution

The fourth proportional to 503.25, 693.90 and 328.29 is: 452.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.25 : 693.90 = 328.29 : x
  2. Step 2: Convert to fraction form
    503.25/693.90 = 328.29/x
  3. Step 3: Cross multiply
    503.25x = 693.90 × 328.29
  4. Step 4: Simplify right side
    503.25x = 227,800.43
  5. Step 5: Solve for x
    x = 227,800.43/503.25
  6. Step 6: Final answer
    x = 452.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.