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Finding the Fourth Proportional to 437.43, 603.95 and 290.49

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Solution

The fourth proportional to 437.43, 603.95 and 290.49 is: 401.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.43 : 603.95 = 290.49 : x
  2. Step 2: Convert to fraction form
    437.43/603.95 = 290.49/x
  3. Step 3: Cross multiply
    437.43x = 603.95 × 290.49
  4. Step 4: Simplify right side
    437.43x = 175,439.98
  5. Step 5: Solve for x
    x = 175,439.98/437.43
  6. Step 6: Final answer
    x = 401.07

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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.