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Finding the Fourth Proportional to 1,705.28, 2,353.02 and 959.42

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Solution

The fourth proportional to 1,705.28, 2,353.02 and 959.42 is: 1,323.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,705.28 : 2,353.02 = 959.42 : x
  2. Step 2: Convert to fraction form
    1,705.28/2,353.02 = 959.42/x
  3. Step 3: Cross multiply
    1,705.28x = 2,353.02 × 959.42
  4. Step 4: Simplify right side
    1,705.28x = 2,257,534.45
  5. Step 5: Solve for x
    x = 2,257,534.45/1,705.28
  6. Step 6: Final answer
    x = 1,323.85

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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.