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Finding the Fourth Proportional to 437.85, 603.99 and 306.63

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Solution

The fourth proportional to 437.85, 603.99 and 306.63 is: 422.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.85 : 603.99 = 306.63 : x
  2. Step 2: Convert to fraction form
    437.85/603.99 = 306.63/x
  3. Step 3: Cross multiply
    437.85x = 603.99 × 306.63
  4. Step 4: Simplify right side
    437.85x = 185,201.45
  5. Step 5: Solve for x
    x = 185,201.45/437.85
  6. Step 6: Final answer
    x = 422.98

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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.