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Finding the Fourth Proportional to 437.91, 603.86 and 290.49

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Solution

The fourth proportional to 437.91, 603.86 and 290.49 is: 400.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.91 : 603.86 = 290.49 : x
  2. Step 2: Convert to fraction form
    437.91/603.86 = 290.49/x
  3. Step 3: Cross multiply
    437.91x = 603.86 × 290.49
  4. Step 4: Simplify right side
    437.91x = 175,415.29
  5. Step 5: Solve for x
    x = 175,415.29/437.91
  6. Step 6: Final answer
    x = 400.57

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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.