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Finding the Fourth Proportional to 1,705.39, 2,353.21 and 959.38

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Solution

The fourth proportional to 1,705.39, 2,353.21 and 959.38 is: 1,323.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,705.39 : 2,353.21 = 959.38 : x
  2. Step 2: Convert to fraction form
    1,705.39/2,353.21 = 959.38/x
  3. Step 3: Cross multiply
    1,705.39x = 2,353.21 × 959.38
  4. Step 4: Simplify right side
    1,705.39x = 2,257,614.33
  5. Step 5: Solve for x
    x = 2,257,614.33/1,705.39
  6. Step 6: Final answer
    x = 1,323.81

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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.