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Finding the Fourth Proportional to 958.68, 1,437.90 and 309.44

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Solution

The fourth proportional to 958.68, 1,437.90 and 309.44 is: 464.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.68 : 1,437.90 = 309.44 : x
  2. Step 2: Convert to fraction form
    958.68/1,437.90 = 309.44/x
  3. Step 3: Cross multiply
    958.68x = 1,437.90 × 309.44
  4. Step 4: Simplify right side
    958.68x = 444,943.78
  5. Step 5: Solve for x
    x = 444,943.78/958.68
  6. Step 6: Final answer
    x = 464.12

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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.