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Finding the Fourth Proportional to 958.49, 1,437.27 and 438.33

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Solution

The fourth proportional to 958.49, 1,437.27 and 438.33 is: 657.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.49 : 1,437.27 = 438.33 : x
  2. Step 2: Convert to fraction form
    958.49/1,437.27 = 438.33/x
  3. Step 3: Cross multiply
    958.49x = 1,437.27 × 438.33
  4. Step 4: Simplify right side
    958.49x = 629,998.56
  5. Step 5: Solve for x
    x = 629,998.56/958.49
  6. Step 6: Final answer
    x = 657.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.