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Finding the Fourth Proportional to 959.82, 1,323.14 and 679.19

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Solution

The fourth proportional to 959.82, 1,323.14 and 679.19 is: 936.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    959.82 : 1,323.14 = 679.19 : x
  2. Step 2: Convert to fraction form
    959.82/1,323.14 = 679.19/x
  3. Step 3: Cross multiply
    959.82x = 1,323.14 × 679.19
  4. Step 4: Simplify right side
    959.82x = 898,658.45
  5. Step 5: Solve for x
    x = 898,658.45/959.82
  6. Step 6: Final answer
    x = 936.28

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Double scale
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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.