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Finding the Fourth Proportional to 437.25, 603.44 and 306.57

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Solution

The fourth proportional to 437.25, 603.44 and 306.57 is: 423.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.25 : 603.44 = 306.57 : x
  2. Step 2: Convert to fraction form
    437.25/603.44 = 306.57/x
  3. Step 3: Cross multiply
    437.25x = 603.44 × 306.57
  4. Step 4: Simplify right side
    437.25x = 184,997.37
  5. Step 5: Solve for x
    x = 184,997.37/437.25
  6. Step 6: Final answer
    x = 423.09

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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.