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Finding the Fourth Proportional to 958.14, 1,437.28 and 309.34

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Solution

The fourth proportional to 958.14, 1,437.28 and 309.34 is: 464.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.14 : 1,437.28 = 309.34 : x
  2. Step 2: Convert to fraction form
    958.14/1,437.28 = 309.34/x
  3. Step 3: Cross multiply
    958.14x = 1,437.28 × 309.34
  4. Step 4: Simplify right side
    958.14x = 444,608.20
  5. Step 5: Solve for x
    x = 444,608.20/958.14
  6. Step 6: Final answer
    x = 464.03

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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.