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Finding the Fourth Proportional to 959.38, 1,321.04 and 880.44

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Solution

The fourth proportional to 959.38, 1,321.04 and 880.44 is: 1,212.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    959.38 : 1,321.04 = 880.44 : x
  2. Step 2: Convert to fraction form
    959.38/1,321.04 = 880.44/x
  3. Step 3: Cross multiply
    959.38x = 1,321.04 × 880.44
  4. Step 4: Simplify right side
    959.38x = 1,163,093.70
  5. Step 5: Solve for x
    x = 1,163,093.70/959.38
  6. Step 6: Final answer
    x = 1,212.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.