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Finding the Fourth Proportional to 437.20, 603.02 and 330.82

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Solution

The fourth proportional to 437.20, 603.02 and 330.82 is: 456.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.20 : 603.02 = 330.82 : x
  2. Step 2: Convert to fraction form
    437.20/603.02 = 330.82/x
  3. Step 3: Cross multiply
    437.20x = 603.02 × 330.82
  4. Step 4: Simplify right side
    437.20x = 199,491.08
  5. Step 5: Solve for x
    x = 199,491.08/437.20
  6. Step 6: Final answer
    x = 456.29

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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.