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Finding the Fourth Proportional to 958.56, 1,435.56 and 610.80

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Solution

The fourth proportional to 958.56, 1,435.56 and 610.80 is: 914.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.56 : 1,435.56 = 610.80 : x
  2. Step 2: Convert to fraction form
    958.56/1,435.56 = 610.80/x
  3. Step 3: Cross multiply
    958.56x = 1,435.56 × 610.80
  4. Step 4: Simplify right side
    958.56x = 876,840.05
  5. Step 5: Solve for x
    x = 876,840.05/958.56
  6. Step 6: Final answer
    x = 914.75

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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.