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Finding the Fourth Proportional to 556.20, 834.29 and 326.69

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Solution

The fourth proportional to 556.20, 834.29 and 326.69 is: 490.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.20 : 834.29 = 326.69 : x
  2. Step 2: Convert to fraction form
    556.20/834.29 = 326.69/x
  3. Step 3: Cross multiply
    556.20x = 834.29 × 326.69
  4. Step 4: Simplify right side
    556.20x = 272,548.40
  5. Step 5: Solve for x
    x = 272,548.40/556.20
  6. Step 6: Final answer
    x = 490.02

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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.