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Finding the Fourth Proportional to 362.68, 500.28 and 313.09

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Solution

The fourth proportional to 362.68, 500.28 and 313.09 is: 431.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    362.68 : 500.28 = 313.09 : x
  2. Step 2: Convert to fraction form
    362.68/500.28 = 313.09/x
  3. Step 3: Cross multiply
    362.68x = 500.28 × 313.09
  4. Step 4: Simplify right side
    362.68x = 156,632.67
  5. Step 5: Solve for x
    x = 156,632.67/362.68
  6. Step 6: Final answer
    x = 431.88

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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.