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Finding the Fourth Proportional to 958.95, 1,437.39 and 411.39

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Solution

The fourth proportional to 958.95, 1,437.39 and 411.39 is: 616.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.95 : 1,437.39 = 411.39 : x
  2. Step 2: Convert to fraction form
    958.95/1,437.39 = 411.39/x
  3. Step 3: Cross multiply
    958.95x = 1,437.39 × 411.39
  4. Step 4: Simplify right side
    958.95x = 591,327.87
  5. Step 5: Solve for x
    x = 591,327.87/958.95
  6. Step 6: Final answer
    x = 616.64

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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.