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Finding the Fourth Proportional to 664.67, 996.29 and 253.62

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Solution

The fourth proportional to 664.67, 996.29 and 253.62 is: 380.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    664.67 : 996.29 = 253.62 : x
  2. Step 2: Convert to fraction form
    664.67/996.29 = 253.62/x
  3. Step 3: Cross multiply
    664.67x = 996.29 × 253.62
  4. Step 4: Simplify right side
    664.67x = 252,677.80
  5. Step 5: Solve for x
    x = 252,677.80/664.67
  6. Step 6: Final answer
    x = 380.16

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1.5x scale

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.