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Finding the Fourth Proportional to 500.73, 690.68 and 326.07

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Solution

The fourth proportional to 500.73, 690.68 and 326.07 is: 449.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.73 : 690.68 = 326.07 : x
  2. Step 2: Convert to fraction form
    500.73/690.68 = 326.07/x
  3. Step 3: Cross multiply
    500.73x = 690.68 × 326.07
  4. Step 4: Simplify right side
    500.73x = 225,208.40
  5. Step 5: Solve for x
    x = 225,208.40/500.73
  6. Step 6: Final answer
    x = 449.76

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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.