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Finding the Fourth Proportional to 958.08, 1,434.84 and 547.44

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Solution

The fourth proportional to 958.08, 1,434.84 and 547.44 is: 819.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.08 : 1,434.84 = 547.44 : x
  2. Step 2: Convert to fraction form
    958.08/1,434.84 = 547.44/x
  3. Step 3: Cross multiply
    958.08x = 1,434.84 × 547.44
  4. Step 4: Simplify right side
    958.08x = 785,488.81
  5. Step 5: Solve for x
    x = 785,488.81/958.08
  6. Step 6: Final answer
    x = 819.86

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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.