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Finding the Fourth Proportional to 437.81, 604.18 and 251.31

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Solution

The fourth proportional to 437.81, 604.18 and 251.31 is: 346.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.81 : 604.18 = 251.31 : x
  2. Step 2: Convert to fraction form
    437.81/604.18 = 251.31/x
  3. Step 3: Cross multiply
    437.81x = 604.18 × 251.31
  4. Step 4: Simplify right side
    437.81x = 151,836.48
  5. Step 5: Solve for x
    x = 151,836.48/437.81
  6. Step 6: Final answer
    x = 346.81

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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.