Home / 958.28-1,436.61-438.10

Finding the Fourth Proportional to 958.28, 1,436.61 and 438.10

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Solution

The fourth proportional to 958.28, 1,436.61 and 438.10 is: 656.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.28 : 1,436.61 = 438.10 : x
  2. Step 2: Convert to fraction form
    958.28/1,436.61 = 438.10/x
  3. Step 3: Cross multiply
    958.28x = 1,436.61 × 438.10
  4. Step 4: Simplify right side
    958.28x = 629,378.84
  5. Step 5: Solve for x
    x = 629,378.84/958.28
  6. Step 6: Final answer
    x = 656.78

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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.