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Finding the Fourth Proportional to 437.91, 604.47 and 290.59

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Solution

The fourth proportional to 437.91, 604.47 and 290.59 is: 401.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.91 : 604.47 = 290.59 : x
  2. Step 2: Convert to fraction form
    437.91/604.47 = 290.59/x
  3. Step 3: Cross multiply
    437.91x = 604.47 × 290.59
  4. Step 4: Simplify right side
    437.91x = 175,652.94
  5. Step 5: Solve for x
    x = 175,652.94/437.91
  6. Step 6: Final answer
    x = 401.12

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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.