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Finding the Fourth Proportional to 958.11, 1,436.94 and 308.85

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Solution

The fourth proportional to 958.11, 1,436.94 and 308.85 is: 463.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.11 : 1,436.94 = 308.85 : x
  2. Step 2: Convert to fraction form
    958.11/1,436.94 = 308.85/x
  3. Step 3: Cross multiply
    958.11x = 1,436.94 × 308.85
  4. Step 4: Simplify right side
    958.11x = 443,798.92
  5. Step 5: Solve for x
    x = 443,798.92/958.11
  6. Step 6: Final answer
    x = 463.20

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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.