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Finding the Fourth Proportional to 322.51, 484.39 and 276.34

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Solution

The fourth proportional to 322.51, 484.39 and 276.34 is: 415.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.51 : 484.39 = 276.34 : x
  2. Step 2: Convert to fraction form
    322.51/484.39 = 276.34/x
  3. Step 3: Cross multiply
    322.51x = 484.39 × 276.34
  4. Step 4: Simplify right side
    322.51x = 133,855.64
  5. Step 5: Solve for x
    x = 133,855.64/322.51
  6. Step 6: Final answer
    x = 415.04

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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.