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Finding the Fourth Proportional to 502.43, 693 and 303.21

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Solution

The fourth proportional to 502.43, 693 and 303.21 is: 418.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.43 : 693 = 303.21 : x
  2. Step 2: Convert to fraction form
    502.43/693 = 303.21/x
  3. Step 3: Cross multiply
    502.43x = 693 × 303.21
  4. Step 4: Simplify right side
    502.43x = 210,124.53
  5. Step 5: Solve for x
    x = 210,124.53/502.43
  6. Step 6: Final answer
    x = 418.22

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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.