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Finding the Fourth Proportional to 958.22, 1,435.96 and 436.94

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Solution

The fourth proportional to 958.22, 1,435.96 and 436.94 is: 654.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.22 : 1,435.96 = 436.94 : x
  2. Step 2: Convert to fraction form
    958.22/1,435.96 = 436.94/x
  3. Step 3: Cross multiply
    958.22x = 1,435.96 × 436.94
  4. Step 4: Simplify right side
    958.22x = 627,428.36
  5. Step 5: Solve for x
    x = 627,428.36/958.22
  6. Step 6: Final answer
    x = 654.79

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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.