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Finding the Fourth Proportional to 958.36, 1,322.60 and 565.44

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Solution

The fourth proportional to 958.36, 1,322.60 and 565.44 is: 780.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.36 : 1,322.60 = 565.44 : x
  2. Step 2: Convert to fraction form
    958.36/1,322.60 = 565.44/x
  3. Step 3: Cross multiply
    958.36x = 1,322.60 × 565.44
  4. Step 4: Simplify right side
    958.36x = 747,850.94
  5. Step 5: Solve for x
    x = 747,850.94/958.36
  6. Step 6: Final answer
    x = 780.34

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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.