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Finding the Fourth Proportional to 959.38, 1,322.22 and 696.94

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Solution

The fourth proportional to 959.38, 1,322.22 and 696.94 is: 960.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    959.38 : 1,322.22 = 696.94 : x
  2. Step 2: Convert to fraction form
    959.38/1,322.22 = 696.94/x
  3. Step 3: Cross multiply
    959.38x = 1,322.22 × 696.94
  4. Step 4: Simplify right side
    959.38x = 921,508.01
  5. Step 5: Solve for x
    x = 921,508.01/959.38
  6. Step 6: Final answer
    x = 960.52

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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.