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Finding the Fourth Proportional to 437.90, 604.32 and 306.94

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Solution

The fourth proportional to 437.90, 604.32 and 306.94 is: 423.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.90 : 604.32 = 306.94 : x
  2. Step 2: Convert to fraction form
    437.90/604.32 = 306.94/x
  3. Step 3: Cross multiply
    437.90x = 604.32 × 306.94
  4. Step 4: Simplify right side
    437.90x = 185,489.98
  5. Step 5: Solve for x
    x = 185,489.98/437.90
  6. Step 6: Final answer
    x = 423.59

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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.