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Finding the Fourth Proportional to 437.74, 604.11 and 306.70

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Solution

The fourth proportional to 437.74, 604.11 and 306.70 is: 423.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.74 : 604.11 = 306.70 : x
  2. Step 2: Convert to fraction form
    437.74/604.11 = 306.70/x
  3. Step 3: Cross multiply
    437.74x = 604.11 × 306.70
  4. Step 4: Simplify right side
    437.74x = 185,280.54
  5. Step 5: Solve for x
    x = 185,280.54/437.74
  6. Step 6: Final answer
    x = 423.27

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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.