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Finding the Fourth Proportional to 664.11, 994.05 and 502.11

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Solution

The fourth proportional to 664.11, 994.05 and 502.11 is: 751.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    664.11 : 994.05 = 502.11 : x
  2. Step 2: Convert to fraction form
    664.11/994.05 = 502.11/x
  3. Step 3: Cross multiply
    664.11x = 994.05 × 502.11
  4. Step 4: Simplify right side
    664.11x = 499,122.45
  5. Step 5: Solve for x
    x = 499,122.45/664.11
  6. Step 6: Final answer
    x = 751.57

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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.