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Finding the Fourth Proportional to 324.04, 450.29 and 320.70

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Solution

The fourth proportional to 324.04, 450.29 and 320.70 is: 445.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.04 : 450.29 = 320.70 : x
  2. Step 2: Convert to fraction form
    324.04/450.29 = 320.70/x
  3. Step 3: Cross multiply
    324.04x = 450.29 × 320.70
  4. Step 4: Simplify right side
    324.04x = 144,408.00
  5. Step 5: Solve for x
    x = 144,408.00/324.04
  6. Step 6: Final answer
    x = 445.65

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.