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Finding the Fourth Proportional to 958.08, 1,436.94 and 547.68

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Solution

The fourth proportional to 958.08, 1,436.94 and 547.68 is: 821.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.08 : 1,436.94 = 547.68 : x
  2. Step 2: Convert to fraction form
    958.08/1,436.94 = 547.68/x
  3. Step 3: Cross multiply
    958.08x = 1,436.94 × 547.68
  4. Step 4: Simplify right side
    958.08x = 786,983.30
  5. Step 5: Solve for x
    x = 786,983.30/958.08
  6. Step 6: Final answer
    x = 821.42

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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.